Comment # 16 on bug 977559 from Wolfgang Rosenauer

Now I got a machine with KDE:

20:21:02.782 NS_NOINTERFACE: Component returned failure code: 0x80004002
(NS_NOINTERFACE) [nsISupports.QueryInterface]1 ShellService.jsm:34:0
20:21:06.152 TypeError: gContextMenu is null
onpopuphiding() browser.xul:1
1 browser.xul:1:97