i had the problem with easy cd -the baloon that comes up when you start, damn annoying - i uninstalled all cd burning software then done the following from MS
search for cdr*.sys files on your hdd
In the Look in list, click Local Hard Drives (C

, and then click Search.
In the right pane of the Search Results dialog box, rename the following files if they are listed:
Cdr4_2K.sys
Cdralw2k.sys
To do this, right-click a file, and then click Rename on the shortcut menu that appears. Rename the .sys file extension to .old, and then press ENTER.
When you are finished renaming the files, close the Search Results dialog box.
Click Start, and then click Run.
In the Open box, type regedit, and then click OK.
Navigate to the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
In the right pane of the Registry Editor window, right-click the UpperFilters value (if it is present), and then click Delete on the shortcut menu that appears. Click Yes on the Confirm Value Delete message that appears.
In the right pane of the Registry Editor window, right-click the LowerFilters value (if it is present), and then click Delete on the shortcut menu that appears. Click Yes on the "Confirm Value Delete" message that appears.
Navigate to the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdr4_2K
On the Edit menu, click Delete, and then click Yes on the "Confirm Key Delete" message that appears.
Navigate to the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdralw2k
On the Edit menu, click Delete, and then click Yes on the "Confirm Key Delete" message that appears.
Navigate to the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdudf
On the Edit menu, click Delete, and then click Yes on the Confirm Key Delete message that appears.
Navigate to the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UdfReadr
On the Edit menu, click Delete, and then click Yes on the Confirm Key Delete message that appears.
On the File menu, click Exit.
Restart the computer.
it worked for me - i then installed nero 5, previously my machine would hang when ever it wanted, even when idle, havent had a problem since