Some files in WordPress 2.1.1 at WordPress.org had been compromised by a cracker and this makes the WordPress files (2.1.1) is not safe for use and widely opened to malicious attack. Here's the excerpt from WordPress' blog.
This morning we received a note to our security mailing address about unusual and highly exploitable code in WordPress. The issue was investigated, and it appeared that the 2.1.1 download had been modified from its original code. We took the website down immediately to investigate what happened.
It was determined that a cracker had gained user-level access to one of the servers that powers wordpress.org, and had used that access to modify the download file. We have locked down that server for further forensics, but at this time it appears that the 2.1.1 download was the only thing touched by the attack. They modified two files in WP to include code that would allow for remote PHP execution.
Upgrade your WordPress file to the latest version now.
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Freaky freaky… I am getting a little bugged by these updates. When you run quite a few sites like I do, making these updates pretty much is an all day process.
Wordpress should have an auto update wizard commonly found in many opensource message board systems… it sure would make things a lot easier.
there’s no need to care so much..the updates only for who updates to 2.1.1 within 3-4 days past..before that maybe not infected..
had think to upgrade but wait for a moment when it really safe..:-?
I need to upgrade as previosuly I’m using 2.1.1 :d