A couple of weeks ago I realised I had some of these initially distributed clams so I'm trying to stake with them. I used the bootstrap file to get up-to-date in a reasonable time and did manage to stake once, so that was a good start. I'm just running clamd, not qt. I was using some 1.4.4-beta that I compiled from source on linux.
Unfortunately, I realised today that my clamd has been stuck at block 300998 (from Jan 18). Plus getinfo said my balance was 0, but fortunately that part was just wrong. I found this thread and saw a recent post that suggested looking at the debug.log file, so I did. I found error messages like
ERROR: ProcessBlock() : duplicate proof-of-stake ...
just like shawn2025 above did. Following allejuppa's suggestion above, I just restarted everything restarting from the bootstrap again. To be specific, I moved my .clam to an old directory, downloaded the latest version of clam for linux(32), created a new .clam directory and copied over (only) my clam.conf and wallet.dat files. I then put the latest bootstrap.dat in the new .clam directory. I restarted and let it run for 6 hours or so.
I think I'm now caught up and things seem to be running OK. I just wanted to confirm this kind of thing is happening and there is a somewhat time consuming way around it.
Even with the problems, I'm enjoying learning about your coin.
I did not use the bootstrap, but same here. Everything running smooth. It's taking a day or so to stake, but I've generated a couple coins since then. Good luck!