I have seen this problem before in FC4 and thought it was caused by a SATA drive problem that was corrected. However, I now see it in FC5. When running Firefox, with latest Java, mplayer and xmms, listening to (in my case) XM radio, GNOME panels become unresponsive. Not only unresponsive, but I desktop items disappear, and I cannot reset X. The only way is to kill X and then sometimes, I get everything back. Otherwise, it's a reboot. My first incident occurred when I was running a Windows XP system under VMware workstation and FC4. I would listen to XM radio and when I switched back to a Linux window, I would loose my items on the GNOME panel. At first I thought it was VMware, but I tried it under KDE without any problems. I like working with GNOME, so I am reluctant to switch. I also ran into this other systems - AMD64 Intel P4 and a hyper-threaded Pentium. My laptop also experienced the same problem. Has anyone run into this? Any suggestions? Nothing appears in the logs.... -- Ed Gurski <ed@xxxxxxxxxx>