My HQ Client v2.0 is always (like 2-3 times every day at every location) getting stuck in what appears to be some kind of endless loop.
In the 'status' area near the top of the HQ Client window, it flashes two messages too fast to read. Something about POS Socket and Checking... something.
Three of the stores' HQ Client are on Windows Server 2003 boxes, the other on XP Pro. It happens at every store, practically every day, and routinely happens multiple times/day.
I'm running v2.0.0109
Tom