Shortly after Elemental Evil's launch, I had major rubberbanding issues for a while. They were kind of bizarre because sometimes the game wouldn't just yank me backwards, but also sideways (which was pretty random) until I got stuck in a corner somewhere.
This seems to have resolved itself in recent weeks, however instead Cryptic's servers are now slow and unresponsive in general. At certain times of the day the loading screens seem to rival SWTOR's, and when you've finally loaded in you immediately get hit by a "server not responding" message and logged out again.
According to my pet tank, he has similar issues in STO. Not helpful when you only have limited time to play, Cryptic!