Dunno why, but over the last 2 days or so my Bitcoin-Qt asked me to rebuild my database several times. Using testnet, I got this:
2013-10-26 11:05:34 ERROR: DisconnectBlock() : outputs still spent? database corrupted 2013-10-26 11:05:35 ERROR: VerifyDB() : *** coin database inconsistencies found (last 66 blocks, 1221 good transactions before that)
Were there recent merges, which could cause this? Another LevelDB bug perhaps, are we up to date @mikehearn @sipa?