RSS Feed problems

I just installed WP 2.0.4 (https://www.phillysportsonline.com) and i seem to be having a problem with my feeds. When i try to add the feed to feedburner it does not validate. When i try to view the feed by clickin on the comments link, it shows it what looks like plain html.

On my other sites everything seems to be fine: https://www.whoisjoegallelli.com and https://bcfflonline/wroundup

Any help would be greatly appreciated.