Lately I've had this problem in Firefox under Windows, where the download manager just displays
Code:
XML parsing error: undefined entity
Location: chrome://downloadmgr/content/downloadsidebar.xul
Line number 135, Column 27:
<toolbarbutton label="&cmd.options.label;"
---------------------^
I've tried removing all extensions, reinstalling, removing chrome and profile dirs both in doc&settings and program dir, to no avail. I even deleted firefox entries in the registry. Any ideas how I can completely remove Firefox? The Mozilla forums I've searched just come up with XML programming, which I have no clue what to do with..