I only just started having rubberbanding today. Otherwise I've not had any lag issues. Occasionally I've had to wait a few extra seconds for equipped items to actually show up on the character, but other than that it's been smooth sailing.
Tonight was my first time playing, lots of rubber banding experienced. It was horrible about 15-30 minutes before the server went down. I couldn't run 15 feet without being warped back every 3 out of 4 times. This was usually accompanied by "Server Timed Out" or some type of red warning message. Hopefully this problem will be resolved quicker than SOE resolved it in SWG.
I have been getting a weird rubberbanding problem since after Thursday's closed beta. When I just log into sector space, I see everyone around me in real time doing things, and I get chat in real time, but if I try to do anything myself I rubberband. Typically sometimes I can get almost half way across a sector and I will get back to where I was originally.
It is really annoying, changing instances can sometimes fix this, if the lag isn't tough enough to not allow me to do that. Its really frustrating and some lag is understandable, but I just hope its fixed by release.