Had a lot of problems testing this feature on my system with very low values. KeepLastXBuilds seems to be processing with a cleanUpValue 3 lower than specified. I tried values of 2 and 3, and it kept no logs at all. I entered 7, and it kept 4 logs. So I reduced to 6, and it kept 3 logs.
Dashboard indicates version 1.5.7256.1
