Why cant the luck stay around 100% for a while. Why from 192% straight down to 40%

Almost like the Texas weather, from one extreme to the other in a day.
I suspect something is wrong still with slush's pool from the problems we had on Friday. Only 5 blocks found today.. My backup pool which has a less combined hashing power than Slush found 17 blocks for the day so far!!! What is going on?

Your stats must be wrong. What pool smaller than slush (which is already fairly small) has found seventeen blocks in the last 24 hours?