I am using WordPress 2.7.1 and have been unable to upload images using the Flash uploader or image uploader. Every time I try to upload an image Firefox crashes. I am using Firefox 3.0.10. I was not sure what was happening. However, it is a pain when there are plugins that require this method to upload images that can be accessed for their respective application.

I also had been having problems that were specific to Firefox; with being able to add widgets to the right sidebar, using the new dynamic sidebars in WordPress. I really like using Firefox, so these issues have been a little disconcerting. What I discovered about the image uploader crashing is that after I deactivated Google Gears, Firefox does not crash when I try to upload images. So that seemed to be the fix for this issue.

If you are having the same problem, check to see if you have installed the Gears addon. You can find that from the Menu Bar. Click on Tools and you will see Addons in the dropdown menu. Select Addons and see if you have Gears installed and activated. If so, deactivating may be the solution; however, it may be necessary to uninstall it, too.

Hopefully, this will help someone else experiencing the same issue.