I have just installed a new file server which is Windows Server 2008 x64 Std to replace my exisiting 2003 File Server x86. When my users opened a file others could view it read only but since moving them to the 2008 server If a XP user has a file open a vista machine comes up saying dowloading and doesn't tell you someone else has it open, also if a XP machine accesses a mdb file no problem but as soon as a Vista machine opens it, it corrupts for the XP users. Put it back on 2003 and both are fine? HELP