So Wordpress just released 18.104.22.168 to fix the RSS problem which has bitten me badly too. The trouble is that I am getting sick of their manual upgrade steps - backup, overwrite, restore, etc. etc. when the only changes have been to the core files!
I wonder why they can’t release very minor releases (e.g. 22.214.171.124) as patches. Even minor releases (e.g. 1.5.1) can be released as patches - the database changes can be handled using the upgrade script which can itself be available as a patch.
Granted that patch is available only on Unix systems and that also on systems where you have shell access. But again, the general release is always available as a full download anyway, right?
Take this bugfix release for example. Here is the patch file I created for the 126.96.36.199 release. To upgrade all you have to do is to change directory to the wordpress root, and run
patch -p1 < wordpress-188.8.131.52.patch. That is it! You have upgraded!