I'm using client version 0.8.54.0 now, still stuck at block 615. According to the debug log, the client is connected to several nodes that report they have 620 blocks but my client makes no effort to catch up on the missing blocks!

I'm possibly on a fork because my block 615 differs from this one: http://www.chainbrowser.com/memorycoin/block/00017a2988f88953776c084b8010cbd74fd6c98e08d5cd834df786aed13acd09/
How can I get my client to load the correct chain?

edit: Seems like my client is on the wrong side of the fork at block 607, how can I fix this?