OK. I changed the capture access-list as requested however the second entry you provided was not accepted as you had typed it out above. It reported back that there was a problem with "any" but only for the second entry. I replaced "any" with "0.0.0.0 0.0.0.0". I hope that is the same in this case.
After doing so this was the result of the capture:
1 packets captured
1: 11:33:46:863450 802.1Q vlan#2 P0 @@@.@@@.@@@.@@@.500 > ###.###.###.###.500 udp 84
1 packets shown
---------------------------
More information:
I am using the Greenbow VPN Client software v4.00 and connecting at the far end to a linksys router. I have used this VPN client software successfully for about a year now and have been connecting to this VPN endpoint for the same time. Prior to the ASA 5505 being on my network I had a Linksys router.
To be clear, if I remove the ASA from the equation it immediately connects without incident as it always has before. I just wanted to make sure it was clear that the only thing new here is the introduction of the default configured ASA 5505.
I did also turn on logging in the Greenbow VPN client. The result is lenghty but here it is:
20071018 172536 Sdep 90 notified with TGBMONITOR_SA_DEL
20071018 172536 SA 90 sa_find: no SA matched query
20071018 172538 Sdep 90 notified with VPNCONF_SA_OPEN
20071018 172538 SA 90 sa_find: no SA matched query
20071018 172538 Sdep 70 sysdep_connection_check: SA for MyConnectionProfileName-MyConnectionProfileName-P2 missing
20071018 172538 Misc 95 conf_get_str: configuration value not found [Phase 2]

assive-connections
20071018 172538 Misc 75 get_p1name: no Phase 2 Passive-connections found
20071018 172538 Misc 95 conf_get_str: configuration value not found [Phase 2]

assive-connections
20071018 172538 Misc 75 get_p1name: no Phase 2 Passive-connections found
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-MyConnectionProfileName-P2]

hase->2
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-MyConnectionProfileName-P2]:ISAKMP-peer->MyConnectionProfileName-P1
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:ID
20071018 172538 Sdep 10 conf_x509_subject_set: No ID given for "MyConnectionProfileName-P1"
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-MyConnectionProfileName-P2]

hase->2
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-MyConnectionProfileName-P2]:ISAKMP-peer->MyConnectionProfileName-P1
20071018 172538 SA 90 sa_find: no SA matched query
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-P1]

hase->1
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-P1]

hase->1
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-P1]:Transport->udp
20071018 172538 Misc 95 conf_get_str: configuration value not found [General]

ort_IKE
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-P1]:Address->216.126.109.6
20071018 172538 Sdep 10 remote gateway is 216.126.109.6
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:Local-address
20071018 172538 Misc 95 conf_get_str: configuration value not found [General]:Listen-on
20071018 172538 Trpt 70 transport_add: adding 011330F0
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-P1]:Configuration->MyConnectionProfileName-main-mode
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-main-mode]

OI->IPSEC
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-main-mode]:EXCHANGE_TYPE->ID_PROT
20071018 172538 Misc 95 conf_get_str: [General]:Exchange-max-time->80
20071018 172538 Timr 20 => timer_add_event
20071018 172538 Timr 20 => timer_debug
20071018 172538 Timr 20 <= timer_debug
20071018 172538 Timr 15 timer_add_event: add exchange_free_aux (004057A7) with arg 01132F30 expiration 1192750018
20071018 172538 Timr 15 timer_add_event: event exchange_free_aux(01132F30) added last, expiration in 80s
20071018 172538 Timr 20 => timer_debug
20071018 172538 Timr 15 timer 01133010 exchange_free_aux expiration in 80 s
20071018 172538 Timr 20 <= timer_debug
20071018 172538 Timr 20 <= timer_add_event
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-P1]:Configuration->MyConnectionProfileName-main-mode
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:Xauth
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:Rconf
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:XAuthMode
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:Xpopup
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:Xuser
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:Flags
20071018 172538 Cryp 60 hash_get: requested algorithm 1
20071018 172538 Exch 15 exchange_establish_p1: 01132F30 MyConnectionProfileName-P1 MyConnectionProfileName-main-mode policy initiator phase 1 doi 1 exchange 2 step 0
20071018 172538 Exch 15 exchange_establish_p1: icookie 4e5c4c7b377590ad rcookie 0000000000000000
20071018 172538 Exch 15 exchange_establish_p1: msgid 00000000
20071018 172538 Trpt 95 transport_reference: transport 011330F0 now has 1 references
20071018 172538 Mesg 90 message_alloc: allocated 01132E60
20071018 172538 SA 80 sa_reference: SA 01132CF0 now has 1 references
20071018 172538 SA 70 sa_enter: SA 01132CF0 added to SA list
20071018 172538 SA 80 sa_reference: SA 01132CF0 now has 2 references
20071018 172538 SA 60 sa_create: sa 01132CF0 phase 1 added to exchange 01132F30 (MyConnectionProfileName-P1)
20071018 172538 SA 80 sa_reference: SA 01132CF0 now has 3 references
20071018 172538 SA 80 Found SA in bucket 37
20071018 172538 SA 80 Dumping SA 01132CF0
20071018 172538 SA 80 SA name = (null)
20071018 172538 SA 80 SA flags = 00000000
20071018 172538 SA 80 SA phase = 1
20071018 172538 SA 80 SA references = 3
20071018 172538 SA 90 sa_find: no SA matched query
20071018 172538 Misc 95 conf_get_str: [MyConnectionProfileName-main-mode]:Transforms->3DES-SHA-GRP1
20071018 172538 Misc 95 conf_get_str: [3DES-SHA-GRP1]:ENCRYPTION_ALGORITHM->3DES_CBC
20071018 172538 Misc 95 conf_get_str: [3DES-SHA-GRP1]:HASH_ALGORITHM->SHA
20071018 172538 Misc 95 conf_get_str: [3DES-SHA-GRP1]:AUTHENTICATION_METHOD->PRE_SHARED
20071018 172538 Misc 95 conf_get_str: [3DES-SHA-GRP1]:GROUP_DESCRIPTION->MODP_768
20071018 172538 Misc 95 conf_get_str: [3DES-SHA-GRP1]:Life->LIFE_MAIN_MODE
20071018 172538 Misc 95 conf_get_str: [LIFE_MAIN_MODE]:LIFE_TYPE->SECONDS
20071018 172538 Misc 95 conf_get_str: [LIFE_MAIN_MODE]:LIFE_DURATION->1800,360:28800
20071018 172538 Misc 95 conf_get_str: configuration value not found [3DES-SHA-GRP1]

RF
20071018 172538 Misc 70 attribute_set_constant: no PRF in the 3DES-SHA-GRP1 section
20071018 172538 Misc 95 conf_get_str: configuration value not found [3DES-SHA-GRP1]:KEY_LENGTH
20071018 172538 Misc 95 conf_get_str: configuration value not found [3DES-SHA-GRP1]:FIELD_SIZE
20071018 172538 Misc 95 conf_get_str: configuration value not found [3DES-SHA-GRP1]:GROUP_ORDER
20071018 172538 Cryp 60 hash_get: requested algorithm 1
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:NATT_ENABLED
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:NATT_ENABLED
20071018 172538 Misc 95 conf_get_str: configuration value not found [MyConnectionProfileName-P1]:NATT_ENABLED
20071018 172538 Exch 90 exchange_validate: checking for required SA
20071018 172538 Default (SA MyConnectionProfileName-P1) SEND phase 1 Main Mode [SA] [VID] [VID] [VID] [VID]
20071018 172538 Mesg 90 message_send: message 01132E60
20071018 172538 Mesg 70 ICOOKIE: 0x4e5c4c7b377590
20071018 172538 Mesg 70 RCOOKIE: 0x00000000000000
20071018 172538 Mesg 70 NEXT_PAYLOAD: SA
20071018 172538 Mesg 70 VERSION: 16
20071018 172538 Mesg 70 EXCH_TYPE: ID_PROT
20071018 172538 Mesg 70 FLAGS: [ ]
20071018 172538 Mesg 70 MESSAGE_ID: 0x000000
20071018 172538 Mesg 70 LENGTH: 160
20071018 172538 Mesg 90 message_send: 4e5c4c7b 377590ad 00000000 00000000 01100200 00000000 000000a0 0d000034
20071018 172538 Mesg 90 message_send: 00000001 00000001 00000028 01010001 00000020 00010000 80010005 80020002
20071018 172538 Mesg 90 message_send: 80030001 80040001 800b0001 800c0708 0d000014 4485152d 18b6bbcd 0be8a846
20071018 172538 Mesg 90 message_send: 9579ddcc 0d000014 90cb8091 3ebb696e 086381b5 ec427b1f 0d000014 7d9419a6
20071018 172538 Mesg 90 message_send: 5310ca6f 2c179d92 15529d56 00000014 afcad713 68a1f1c9 6b8696fc 77570100
20071018 172538 Exch 40 exchange_run: exchange 01132F30 finished step 0, advancing...
20071018 172538 Exch 90 exchange_lookup_by_name: MyConnectionProfileName-P1 == MyConnectionProfileName-P1 && 1 == 1?
20071018 172538 Sdep 20 => check_pending_msg
20071018 172538 Trpt 20 => transport_send_messages
20071018 172538 Trpt 95 transport_reference: transport 011330F0 now has 2 references
20071018 172538 Trpt 95 transport_reference: transport 011A4090 now has 2 references
20071018 172538 Trpt 95 transport_reference: transport 00BBF760 now has 2 references
20071018 172538 Trpt 95 transport_reference: transport 00BBF6D0 now has 2 references
20071018 172538 Trpt 95 transport_reference: transport 00BBF710 now has 2 references
20071018 172538 Trpt 95 transport_reference: transport 00BBFF00 now has 2 references
20071018 172538 Trpt 95 transport_reference: transport 00BBFFC0 now has 2 references
20071018 172538 Trpt 95 transport_reference: transport 00BB0310 now has 2 references
20071018 172538 Trpt 95 transport_reference: transport 00BB0370 now has 2 references
20071018 172538 Trpt 20 => udp_send_message
20071018 172538 Trpt 20 <= udp_send_message
20071018 172538 Misc 95 conf_get_str: [General]:retransmits->5
20071018 172538 Trpt 30 transport_send_messages: message 01132E60 scheduled for retransmission 1 in 7 secs
20071018 172538 Timr 20 => timer_add_event
20071018 172538 Timr 20 => timer_debug
20071018 172538 Timr 15 timer 01133010 exchange_free_aux expiration in 80 s
20071018 172538 Timr 20 <= timer_debug
20071018 172538 Timr 15 timer_add_event: add message_send_expire (0041C873) with arg 01132E60 expiration 1192749945
20071018 172538 Timr 15 timer_add_event: event message_send_expire(01132E60) added before exchange_free_aux(01132F30), expiration in 7s
20071018 172538 Timr 20 => timer_debug
20071018 172538 Timr 15 timer 011329A0 message_send_expire expiration in 7 s
20071018 172538 Timr 15 timer 01133010 exchange_free_aux expiration in 80 s
20071018 172538 Timr 20 <= timer_debug
20071018 172538 Timr 20 <= timer_add_event
20071018 172538 Trpt 95 transport_release: transport 011330F0 now has 1 references
20071018 172538 Trpt 95 transport_release: transport 011A4090 now has 1 references
20071018 172538 Trpt 95 transport_release: transport 00BBF760 now has 1 references
20071018 172538 Trpt 95 transport_release: transport 00BBF6D0 now has 1 references
20071018 172538 Trpt 95 transport_release: transport 00BBF710 now has 1 references
20071018 172538 Trpt 95 transport_release: transport 00BBFF00 now has 1 references
20071018 172538 Trpt 95 transport_release: transport 00BBFFC0 now has 1 references
20071018 172538 Trpt 95 transport_release: transport 00BB0310 now has 1 references
20071018 172538 Trpt 95 transport_release: transport 00BB0370 now has 1 references
20071018 172538 Trpt 20 <= transport_send_messages
20071018 172538 Timr 20 => timer_handle_expirations
20071018 172538 Timr 20 => timer_debug
20071018 172538 Timr 15 timer 011329A0 message_send_expire expiration in 7 s
20071018 172538 Timr 15 timer 01133010 exchange_free_aux expiration in 80 s
20071018 172538 Timr 20 <= timer_debug
20071018 172538 Timr 20 => timer_debug
20071018 172538 Timr 15 timer 011329A0 message_send_expire expiration in 7 s
20071018 172538 Timr 15 timer 01133010 exchange_free_aux expiration in 80 s
20071018 172538 Timr 20 <= timer_debug
20071018 172538 Timr 20 <= timer_handle_expirations
20071018 172538 Sdep 20 <= check_pending_msg