OK did the following
Upgraded Nettalk to 8.23
Upgraded String Theory to 2.08
This seems top have helped, however some users still having issues.
Symptom is as as follows:
1) User logs in and a Session variable is set for their Staff ID and their User Name is captured to a Session variable.
2) On the top of the initial menu their User name shows
3) When they choose a menu choice to display a table for all assigned documents, the filter is ignored and all documents show up.
4) Their name should also appear at the top of the table but it is blank
So it seems to have lost the two session variables and just ignores the filter and shows everything.
I cannott get it to do this on my system, but had a user this morning who it did happen to.
When I log in as that user on my PC the filter is fine?

Brian.
ps -
www.capesoft.com is down so can't see if Bruce has posted a further update?