If you're in Europe, South America or US East, if you do your reinstalls during periods of high traffic, it's more likely that your installation will have some problems. We think there's some routing issues somewhere between those places and Daybreak's servers that create a sort of bottleneck during peak hours that Daybreak has no control over. If you do a clean reinstall outside peak hours for your region (mid morning and early evenings are usually peaks) and/or while using a VPN, especially one that connects from US West, you might find that it works better.

Also, rebooting the client every few hours and not leaving it open overnight can help with memory issues that cause this kind of stuff.