As you may know we've been having some server instability since the last release. We're currently rolling back the changes that may be behind that which will take around an hour (hopefully a bit less). Sorry for the inconvenience.
The 20 to 40 minute log in times I'd been having prior to the patch are consistently gone now- been able to log in in the first or second attempt each time since the patch went live [versus the 30th, 40th, etc]. Too early to tell reliably if the other issues are gone for good [infinite loading-icon screens, memory leaking on loading-icon screens, frequent desyncs and server disconnects, etc], but I haven't noticed any of them at all since, either, and they'd gotten pretty reliable by the end there. So, whatever you changed, it seems to have done the trick.. =O