Beware the USB Modem
I recently had to resign all my in-progress games. I do a lot of traveling for work and just moved to Gorlitz, Germany where I couldn't get a broadband connection. So, I purchased a USB Modem and service from Vodaphone. I tested the connection to Chess.com while I was still in the store and had no problems seeing the page. Great!
Later that night I loaded the page to make a few moves. What!? I can't see the pieces on the board! I contacted the Chess.com Support right away. In the meantime, I set my vacation time active.
To be fair to all those 48 people I was playing at the time I had to resign all my games. Even if I hadn't resigned I would have lost anyway once 30 days of vacation time expired. Why waste vacation?