Hey there
Other people seem to be having this problem as well, but it's not resolved...
So, whenever i want to edit a theme's code in wordpress and hit the "update file" button, it tells me that the file was updated successfully, but every change i made to the code is gone. The code simply reverts back to it's original state.
I tried deleting and reinstalling wordpress. I tried every version from 2.5 up to 2.8. I deleted and opened up a new mySQL account several times. But nothing works. Versions 2.5 to 2.6.1 seem to have a different problem though, there I'm not even able to log into the admin-page.
I have another domain where wordpress is running just fine, where i can edit everything i want and it works.
I've been searching the net, different forums, and found posts regarding the same issue, but there is no solution as of yet.
Any help would be greatly appreciated (I am going nuts).