2007-05-16, 11:32 PM
I have experienced some major lag with regards to lag under GTK libraries (this is normally related to Gnome programs but can affect programs running under KDE which use GTK). Try altering the GTK theme that is used, you can do this in Gnome. Or you can install a rather neat utility called GTK CHTheme. By switching to a lighter theme you should see some improvement but in reality, this is simply an issue with the libraries, it isn't going to be easily fixed until someone figures out some quicker methods for GTK. Obviously, disabling Beryl would improve this (again not fix), basically removing graphical elements to your windows, thus reducing what needs redrawn.
Hope that makes some sense.