Applications freeze after several hours of extensive use

[Torsten Römer]

I have recently upgraded to KDE 4.7.4 from the PPA to get rid of constant crashes of the Desktop. Since then, some of the applications I extensively use throughout the day start to become extremely slow at some point after some hours of use (it is more the GUI that seems to be slow), use 100% CPU and if done quickly, they can be closed, otherwise they completely freeze within about a minute and keep on using 100% CPU.
At least sometimes it is actually an X.org process that uses 100% CPU, not the actual application process.

I have this with Eclipse which I use most, but have seen the exact same behaviour also with GIMP and Firefox.

The problem did not occur before the upgrade to KDE 4.7.4, but it is still just a guess that it has something to do with that.

The same behaviour shows on two different PCs with a clean installation of Kubuntu 11.10 and KDE 4.7.4 from the PPA.

[yurikoles (yurikoles)]

Obvious advice: use official packages.

[Torsten Römer (dode)]

With the official packages available at that time the desktop frequently crashed and was almost unsuable: https://bugs.kde.org/show_bug.cgi?id=272495

And by now I have the official packages, I suppose, and it is still the same problem - restarting Eclipse three times per day and Lotus Notes (Eclipse based!) won't even start at all (which it does just fine under Gnome and Xfce).

[Torsten Römer (dode)]

After upgrading to kubuntu 12.04 with KDE 4.8.2, I don't experience this problem any more.

I can use Eclipse and any other application the whole day without that it freezes.

This version of kubuntu and KDE seems to be very stable in general.

Cheers,
Torsten

[Torsten Römer (dode)]

I suppose this bug report is not relevant any more - it is very old, the issue went away long time ago and there is a new major release of KDE for a while now - setting it to invalid.