04-10-2008 05:29 AM
04-11-2008 09:45 AM
04-14-2008 03:14 PM
04-18-2008 01:47 PM
While I can't see why this would matter ... ACT! 2007 Premium was not tested with Vista and this might be a possible cause.
Have you tried the demo database and see if the same thing happens?
How about if you try a different layout?
I also would not recommend having multiple users logging in with as same user it can cause record locking issues.