Just want to let you know that I have upgraded my blog to WordPress 2.8.3 without any problem until now. I did this immediately since this is a security fix specially to those who install WordPress 2.8.1. | Security Release
A word from by Ryan Boren
Unfortunately, I missed some places when fixing the privilege escalation issues for 2.8.1. Luckily, the entire WordPress community has our backs. Several folks in the community dug deeper and discovered areas that were overlooked. With their help, the remaining issues are fixed in 2.8.3. Since this is a security release, upgrading is highly recommended. Download 2.8.3, or upgrade automatically from your admin. [ Source ]
Please let me know if you see any problem while browsing this blog. Happy Blogging to all