Comment 31 for bug 711231

I recommend to not consider this bug for an SRU anymore, and wll update the milestone accordingly.

Rationale:
- the only potential fix for the problem has proved to have widespread and critical side-effects when used on compiz (and was reverted as a consequence)
- the issue occurs only under special conditions and doesn't impact users in regular daily usage

The bug is moved to the backlog though, as it is still something we'd like to get rid of for the next version.