Firefox problems

Hi to all.

I’m having some problems with WordPress (3.2.1) and Firefox (7.0.1).

First of all WordPress seems not to recognize that I’m using the latest version of Firefox. On the dashboard I get a message saying that my version of Firefox is out of date and I should update my browser.

The second problem is that Firefox slow down while accessing the site. The green circle on Firefox stop to move and is like if the browser stops or its paused for a few seconds, some times minutes. This only happens while accessing WordPress sites. Some of my blogs make use of wp_head and wp_footer, but some other no, besides that no strange javascripts, jquery or other usual heavy stuff that will naturally slow down the site.

I had found that removing the wp_footer in some cases makes the site load faster, but after log in the problem persist. It makes hard to use some of the basics of functions of wordpress.

Note that there are some blogs with no plugins at all and Firefox has only Firebug and Page Speed no other stuff.

Any one else experiencing some sort of problems similar to this ???