Description of problem: Again evolution stuck on close
Created attachment 635658 [details] backtrace for evolution
Created attachment 635659 [details] backtrace for evolution-addressbook-factory
Created attachment 635660 [details] backtrace for evolution-calendar-factory
Thanks for a bug report. The two factories are idle, the whole "freeze" is on the evolution side. The EWS account is disposing in one thread, waiting for its soup-thread to finish, while two other threads are using the same connection like it was alive. I suppose this is fixed in Fedora 18, evolution-ews 3.6.0+, where the internals of connect and disconnect had been rewritten significantly. I'm closing this in favour of Fedora 18, but please re-evaluate when it's available and feel free to reopen, if you'll face it there too.