Firefox problems

Having all sorts of problems with Firefox. I lost all my bookmarks and now it seems to be freezing up altogether IE works fine thankfully.

It says this in the error console:

Error: uncaught exception: [Exception... "Component returned failure code: 0x80570016 (NS_ERROR_XPC_GS_RETURNED_FAILURE) [nsIJSCID.getService]" nsresult: "0x80570016 (NS_ERROR_XPC_GS_RETURNED_FAILURE)" location: "JS frame :: file:///C:/Program%20Files/Mozilla%20Firefox/modules/utils.js :: anonymous :: line 119" data: no]

Error: this.bookmarks is undefined
Source File: file:///C:/Program%20Files/Mozilla%20Firefox/modules/utils.js
Line: 1010

Error: uncaught exception: [Exception... "Component returned failure code: 0x80570016 (NS_ERROR_XPC_GS_RETURNED_FAILURE) [nsIJSCID.getService]" nsresult: "0x80570016 (NS_ERROR_XPC_GS_RETURNED_FAILURE)" location: "JS frame :: chrome://browser/content/tabbrowser.xml :: :: line 163" data: no]

Does that mean anything?

From the exception that it is actually producing it is looking for a bookmarks file and not finding it, and throwing an exception ... try running it in safe mode, failing that a reinstall might do the job ... it doesn't look like it is malware IMHO.