Hello, I've been noticing that KDE performance degrades after it runs for a while on my machine. Since I am the only user, I usually never log off, and just let KDE runs for days at a time (I just lock the screen when I have to leave the desktop). I do restart some applications, e.g kontact, kopete, Firefox just in case I need to login to my mail (IMAP) or IM services from another location.
After a day or two, I would notice that Desktop switching is not as responsive. Scrolling the list of folders or messages in my Kontact / Kmail feel sluggish. Most obvious are desktop effect stuffs (e.g. show dashboard, show all desktops). As anectdotal example, show dashboard would take 4-5 seconds after I hit the shortcut before it happens. Displaying / drawing windows, for examples, if I want to change my preferences in Firefox or Kmail or starting xterm or konsole, is also less responsive. It's not unbearable, but the degradation is there for sure.
Log off (restarting X) and re-login usually cure the problem. If I happen to be too busy and have too many windows / apps open, I can still bear this for a while, so it's probably not show stopper, but it's rather annoying.
I am running F13 - x86_64, fully updated. "Help --> About KDE" shows KDE 4.5.2 is installed. I am using proprietary nVidia driver from RPMFusion, running dual-desktop (twinview). I don't think my hardware is the problem since it's rather beefy machine: Nvidia Quadro NVS 295, 2 quad-core Intel i7 with 16 GB RAM.
I am just wondering if anyone else see the same thing. I am curious if this is KDE's problem, or X with/or Nvidia-driver interaction.
Thanks. AC