I just found the following new htaccess file in my blog's root folder:
http://wordpress.pastebin.com/sxXBhT1P
My WP default theme, which I had been using since 2.1, has suddenly been encoded. I tried the decoding methods in the post http://wordpress.org/support/topic/encrypted-theme-heres-how-to-decode-it?replies=195 but couldn't decode it.
Can I delete that htaccess file?
that is a normal .htaccess generated by wordpress - if you delete it, permalinks will revert to default
paste the encoded section in the pastebin and let's see if it's harmful
Thanks. I've pasted my index.php file in the pastebin:
http://wordpress.pastebin.com/QwAbAcvs
All the php files, such as sidebar.php and so on, have similar encoding.
Samuel,
Thanks. Looks like the decoder didn't work, because the code still has a lot of strings in it that weren't in the original.
The htaccess file and all the other files in the root folder are dated 8/1/2010. As far as I remember, that was the date I added the TinyMCE Advanced plugin. But I added the same plugin to another WP site that same day and that site's code looks fine.
I'll try the solutions in the other sites you posted. Thanks again.