I guess the hot corner for Maggie is triggering a full screen transition, to hit the same issues that The Dave is getting.
We have introduced some workarounds in 2.4 but the reality is that the Window Server is still crashing on some systems. For the few people that still see this is really annoying.
A workaround that proved to be effective for some users is to simplify the full screen transitions by removing complex animations.
This is explained here:
http://support.displaylink.com/knowl...hout-user-inte
Cheers,
Carlo