First, I would like to apologize for the error you have been receiving, when trying to make a forum post. I know it has caused you great inconvinience so I hope it will not happen again. Last week we had some technical problems with our website and most probably this was the reason you were unable to write in our forums. This was just temporary so you should not have troubles anymore. On Friday we fixed the problems and made some optimization.
In case this happens again, please don't hesitate to contact the telerik team and let us know the exact time you got the error and the forum in which you have tried to write.
Concerning the auto-save you suggested, the idea is really good so we are going to implement it ASAP.