Outlook 2002 and working offline

[Richard Tomlin]

Info:
client OS - windows XP Pro
Domain - NT
Exchange - 5.5 on NT4
Outlook 2002

I have an end user utilising and OST file. When offline,
she accepts a meeting request, and sometimes it shows up
in her calendar, sometimes it doesn't.

Is this a bad idea? To accept meeting invites offline I
mean...Or is there something else at play here?

Any help would be appreciatated.

Richard.