Thanks to me old mate Hari for this one. If you have recently upgraded your WordPress blog to version 2.1.1 (like me) you need to upgrade immediately to 2.1.2. Read the WordPress announcement here (or check your dashboard).
Long story short: If you downloaded WordPress 2.1.1 within the past 3-4 days, your files may include a security exploit that was added by a cracker, and you should upgrade all of your files to 2.1.2 immediately.
It seems that someone gained access to the files and put some malicious code in areas of version 2.1.1. This happened in the last 3 or 4 days but, frankly, I’d upgrade even if you did so more than 3-4 days ago.
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