Rewriting BaseUrl in .htaccess - breaks views when clicking update

Don't know if this is a known issue, couldnt find it anywhere:

When you rewrite your baseurl in your htaccess file (telling drupal to use www.site.com instead of site.com) accessing the views UI is fine until you press update, at which time you go to a page which looks like ajax (or something) one long line of code.

Im assuming views is setup for use with site.com and not with www.site.com, is there anything that can be done about this as it makes editing views a nightmare, you have to press back whenever you press 'update' and then you can't see the changes till you save.

BTW - love Views (its just this issue)