I've just upgraded to 2.6.1 and I'm now unable to write new posts or edit existing posts (including drafts). Pages aren't similarly affected.
When I click on a link to edit a post, or write a new one, the page begins to load and the browser shows the title of the edit page ("[Blog Name] > Edit - WordPress") but the page is blank and the status bar constantly says "Waiting for [web address]..." without ever loading.
This happens with FF3 and IE7. I've disabled all plugins, I have 3 categories and 25 tags. I've tried switching between the visual and basic editors with no effect.
Any idea why this might be happening? I've found many threads with similar problems but none exactly like this and no solutions I've found work for me..