This is the error I get with Firefox. There never was a /feed directory created

XML Parsing Error: XML or text declaration not at start of entity
Location: http://sparks-mexico.com/feed/
Line Number 2, Column 1:<?xml version="1.0" encoding="UTF-8"?>

I see the Comments Feed is working from the folder /comments/feed (in Firefox)
But posts just wants the folder /feed

I have a Feedburner account but not sure it would work if these don't

I'm getting an "Error 403: Forbidden' (both safari and Firefox) trying to go there this could be a premissions problem...

Also it is showing up on a 'Parallels H-Sphere' page

The posts is now working but comments not.

The only thing I changed was a redirect from another install of Wordpress in another directory ??

Working fine ... except Comments in IE

do you mean comments feed or comments? And http://sparks-mexico.com takes me directly to the /feed

I turned off comments feed because it didn't work with IE, only Firefox. Very strange.

The base URL works fine for me

I'm now using an RSS extender to add pages but the feed list is limited to 5. I'll have to see if there is a setting for that