rss feed will not validate

I am using atahulapa 3.6.7 wp 3.2.1
my google feedburner displays this: This page contains the following errors:
mediajuicejoint
feed

I thought my feed was fine once i removed some plugins and video from sidebar however they seem to appear and then disappear and I am getting some of the following errors

1)line 173, column 0: XML parsing error: <unknown>:173:58: unclosed CDATA section
this is line 173 Served from: mediajuicejoint.com @ 2011-11-21 12:49:37 -->

2)line 9, column 132: Self reference doesn't match document location [help]
... rel="self" type="application/rss+xml" /><link>http://mediajuicejoint.com ...
^
3)line 63, column 0: content:encoded should not contain iframe tag [help]

4)width="150" height="150" src="http://mediajuicejoint.com/wp-content/uploads/ ...
line 79, column 0: content:encoded should not contain object tag [help]

5)rel="nofollow" target="_blank" href="http://cdn.mediatakeout.com/52408/mto-w ...

This is driving me crazy please help