The only clients that really seem to rely on it are
Java and they're apparently "broken", resp. extremely
picky on the tiemstamp and probably happily refuse focus
if it's *not* equal to the current server time (ie. anything else
happens at this moment) and overmore feel oblieged to act as WM
by juggling around VDs at all.

BUG: 347153
FIXED-IN: 5.6
REVIEW: 126753