When I updated to 2.3 I started getting the 'you do not have permission to do that' error when trying to add categories and publish posts. I checked all throughout the forums to see if there was a fix. There was not. Essentially, I was told this is a common bug and there is no fix and I would have to stop using firefox and use IE or Safari to do these things. It worked, so I gave up trying to fix.
Now, I updated to 2.5, and I started getting the error in IE. I dl'ed Safari, I get the error there as well, and the error is still in Firefox. Because WordPress developers are more concerned with aesthetic qualities versus making sure that their software is compatible with all browsers and their coding is legit, I am now unable to make any new posts on my blog. My blog is rendered useless. This is a known bug on wordpress's end, and unless someone can help me fix this, I'm off to another platform. Someone please help!!