May very well be stability issues along your route to the server--most people find they run through a dozen or more hops getting there. Hard to know for sure without at least running some tracert's to your server.

Time Warner, Comcast, and Charter have all been having some issues in certain regions lately as well, so it may be something up with your ISP upstream from your location. My modem bounced on me twice today when I was home for lunch... and my routing path changed from Cogent to TATA in the process. So, guessing TWC has been working on fixing some routing issues here in the Carolinas today...at least, I HOPE they have been. We've been riding them hard about it for a long time.