Sawmill freezes if you change the focus after setting the system time backwards. To reproduce: -set system time forwards one hour -wait a minute so that sawmill gets this new time -set system time back to the correct time -change focus (alt-tab , click another window whatever) -poof sawmill grabs the keyboard, and after that freezes -hint telnetting in and killing sawmill helps
p.s. This might be related to bug 8994, which describes the same problem for the panel clocks (they froze too, but this is fixed now)
This seems fixed in 6.9b5 close ?!