About the EOFErrors: It is caused by werkzeug's session management, which is apparently not thread-safe, so it gets this error when there is two concurrent requests from the same user. Changed a bit the code to try to avoid these concurrent requests. I'm still getting it, but I feel it is happening less times.
Rewrite ItemLock, so it supports locking by multiple editors, and offer the locked user to use mobwrite. Should get an ajax to update the locks, and offer to the locked if he wants to get into mobwrite.
![/!\](/moin_static19/modernized/img/alert.png "/!\"){kind=small}
Please contact werkzeug's author (mitsuhiko on #pocoo) to discuss that with him.