i too am having this problem. it happens after a certain amount of time. i am surfing the web then just out of no where, i cant anymore, it will say that it couldnt talk to KLauncher. Then I try to open another program (i.e. shell, or another konq window), and i get an error that pops up saying: "KLauncher couldn't be reached via DCOP". I am so stumped and no one seems to have the answer for it. i am using KDE 3.0.5 and XFree86 4.2.0