Jet 4.0 hotfix
Jet 4.0 Database Engine hotfix package - 943509 fixes a number of crashes in Microsoft Access 2002/XP and 2003 as well as other products that use Jet 4.0. (I assume it fixes problems in Access 2000 as well but that article doesn't specifically state that.)
Note though you should carefully examine the event logs of the system(s) which are experiencing problems to ensure this hotfix is applicable to your problem. A hotfix may introduce more problems that it will solve.
You can now request the hotfix from within the KB article by clicking on the links in the Resolution section of the KB article.