I’ve been having problems with Firefox 3.5. Don’t get me wrong, the update is great, but my main tool, Google Reader, stopped working last night. It was very frustrating. I rapidly established that GReader functioned in Chrome and IE, so the problem was with FF 3.5.
When I heard that Google Gears had problems with FF3.5, I suspected that it was culpable, even though I had disabled Gears a while ago. So if you are part of the millions of users of GReader running into problems with FF 3.5, update your Google Gears, enable it and you should be fine.
It was extremely annoying to work with two different browsers to do my work. I cannot understand why big companies like Google and Mozilla would release a product and not make sure that it is compatible with major add-ons and vice versa.