"save changes" under centita options (appearance) times out and quits

Hi, this has been a problem for some time, no matter what computer or internet access I use. I go to save changes on my centita theme options page (under appearance), and I get the sloooowly building green bar that shows me it’s processing it, only to have the entire thing end about 3 minutes later in “internet explorer cannot display the page” or “your session has timed out.” I even updated to wordpress 3 last nite and still have it happen. What the hell is going on?