What does this mean  :

DevFee: 06/15/14-10:06:37 - SHARE FOUND (target 1941) - (THR 1)
06/15/14-10:08:05 - SHARE FOUND (target 20000) - (THR 1)
06/15/14-10:08:16 - SHARE FOUND (target 20000) - (THR 2)
06/15/14-10:08:17 - SHARE FOUND (target 20000) - (THR 1)
DevFee: 06/15/14-10:09:39 - SHARE FOUND (target 1941) - (THR 0)
06/15/14-10:10:42 - SHARE FOUND (target 20000) - (THR 3)
DevFee: 06/15/14-10:11:33 - SHARE FOUND (target 1941) - (THR 0)

Especially the DeVFee and target 1941 part, cause the miner changed to this output  from first started after a while.