Firebug Firefox3 Ubuntu10 JQuery and Parsingproblems

[oliver twist]

Last time everything worked fine,
Today booting and starting firefox problem occured.
The problem is with Firebug not with some website.
Reinstalling firebug did not solve the problem.
example site www.google.com
Found errors:
Error in parsing value for 'background-image'. Declaration dropped.
http://www.google.de/
Line 7

Error in parsing value for 'list-style-type'. Declaration dropped.
chrome://firebug/content/panel.html
Line 204

hotmail.com
upon beein logged in
Error in parsing value for 'list-style-type'. Declaration dropped.
http://js.wlxrs.com/_D/Kz5FMBo-ckjTqsDfbb67Gg/jquery-min.js
Line 16