The site is called Bayfiles. And also the problem seems to be solved, but I have no idea if it can happen again or what was the cause. It has happened like 4 times.
I've never used bayfiles, but since it seems intermittent, I'm guessing this may be normal network congestion. If it runs better at odd hours of the day, then most likely congestion. I usually get better speeds during work hours and during the middle of the night. Evenings seem to be the worse.