On 2011-12-23 we released PokerTH 0.9-beta3. This release introduces a new timeout system, which became necessary for the rejoin feature. Players are now switched to an "autofold" state when being inactive for some time, and will be kicked after a timeout. Rejoin is only possible during the autofold state. This fixes ticket #82. As usual, the new release is available in our download-section.
Have a lot of fun!
Your PokerTH development team