Recently i wrote how good the new wordpress 2.5 was in each and every aspect. But it has a such a big security issue. Only advance techies noted that. And then of course there was the media library upload issue with wordpress 2.5.
Anyways, with many bigs and problems and reports, WordPress had to come with a new version and today they launched the new version 2.5.1. Three big bug fixes including the media bug, one major security fix and around 70 other bugs fixed. This is what you will be getting in 2.5.1
I think i read somewhere that they also enhanced performance for Dashboard, writing post,editing comments and widgets administration. Good thing is that new wordpress has the fix for Internet Explorer layouts issues. So probably, this is a much more stable release. And it’s not a rocket science, but you better upgrade your bloggies to this version fast. At least for the security issue sake! Good luck!