After using Act for about 2 hours, it becomes unstable the culprit seems to be ACT! email. If I close email the system operates ok. Is there an update to VER 8 that addresses this problem. I don't like a lot of things about ACT! email but this is the most sericous.
There is no know issue for this. One of the best things you can do is upgrade to one of the newer versions of ACT! where you can use the full Outlook integration and do away with the ACT! email client altogether.