clip from another forum "Anonymous replica have a known synchronization bug. The fix is to install Jet 4.0 SP 5. See detailed installation instructions at click here. This fix applies to both Access 2000 and Access XP." All these were found using google search
Have shied away so far, from all things tagged XP, so this is guessing on my part.
If Office XP is like Works for Windows then, the days of grace seem to be linked with how long you have before your XP (Simplified version of Access) stops bothering to play with the database from an "old version" of Access. Of course if "sir would like to spend a load-a-money for a shiny new copy of Access or better still Office XP"
Sorry if I'm talking rubbish, but just in case, can you export your database as tables anyway and keep these safe until you know what is working after the computer blows the full time whistle?