What does your XP system have on it? Although MS states (http://support.microsoft.com/default...b;en-us;314865
) you only need 64 megs of RAM (preferably 128), At home I have XP on XP and my system has 256 megs and I wouldn't go any lower as it can still be slow... At the office I use XP/XP and Access 2K with 512 megs of RAM. XP is especially slow when checking on properties.
Anyway, check your RAM & processor speeds and if needed, increase. When you upsize your OS, you usually need to add more RAM.
PS I haven't had any of the errors arise which you are referencing and I've been using the Win XP OS with Access 2K and Access XP on the same system for over a year.