Since logging in this afternoon I've probably crashed close to 10 times in about an hour. I don't lose my internet connection so its not that. Extremely frustrating to say the least.
Thieves guild patch seemed to make things worse. Honestly I wouldn't care if they shut the servers down for a couple of weeks to fix everything. I'd rather wait for a fixed game than play a broken game.
The crashes for me seem to happen most when trying to use a wayshrine or jumping but I never had game crashing problems until the Thieves guild dlc. Now the game is almost unplayable with me having to sign in over and over.