I'm having trouble synchronizing one of my wallets. It's trying to download blocks beyond the current, 835297. This may be due to people running older wallets. It may be necessary to update the next wallet (2.04) to reject any connections below 2.04. This had to be done for Feathercoin if I remember correctly when they were switching to a centralized coin structure.
Hi corather,
You may need to remove blk0001.dat and txleveldb and re-sync using the "File->Reload Blockchain" feature. 2.0.4 is coming out within the hour, so you may want to wait for that. 2.0.4 will block connections from protocol version 70003. The newest protocol version is 70004.
-Steve