Judy, this sounds serious, and needs attention.
Firstly, have you split the database, so everyone has their own local copy
of the front end, with linked tables to a shared back end? If that is a new
idea, see:
http://allenbrowne.com/ser-01.html
Second, what Office service patch do you have?
Open the Help | About screen.
If it does not say "Access 2002 SP2" then go to
http://support.microsoft.com
and get Service Pack 2 for Office XP.
Make sure the patch is applied on ALL workstations.
Third, and most importantly, what patch do you have for JET?
Find the file msjet40.dll (typically in windows\system32).
Right-click, and choose Version.
If it is less than 4.0.8015.0, go to
http://support.microsoft.com
and get Service Pack 8 for JET 4.
Make sure the patch is applied on ALL workstations.
After that, open the database on one computer only, and compact/repair
(Tools | Database Utilities). Do this for both the front end and the back
end.
If the problem still remains, it is possible that you have:
- a disk problem (e.g. full, temp folder is invalid, or chckdsk error), or
- a network problem (e.g. faulty connector/cable/switch, excessive
collisions), or
- a corrupted database. See:
http://allenbrowne.com/ser-47.html