Bad news: the bug just reappeared on my machine. Deleting Trolltech.conf solved the bug again.
qt4 modifies Trolltech.conf when lyx is running, and hence can cause the bug to reappear. Probably a qt4 bug, but this might still be due to an improper use of qt4 by Lyx.
So the bug is NOT solved and only a patch will stop the annoyance.
I've attached the result of $ diff Trolltech.conf.good Trolltech.conf.bad
Bad news: the bug just reappeared on my machine. Deleting Trolltech.conf solved the bug again.
qt4 modifies Trolltech.conf when lyx is running, and hence can cause the bug to reappear. Probably a qt4 bug, but this might still be due to an improper use of qt4 by Lyx.
So the bug is NOT solved and only a patch will stop the annoyance.
I've attached the result of $ diff Trolltech.conf.good Trolltech.conf.bad