I use both Firefox 32.0.3 and IE 10.0.9200.17116 regularly. For various reasons, IE is my default browser, so whenever I get an email notification from any forum and click on the "view thread" (or equivalent) button in the email, it uses IE If I am just opening a browser to check forums, I use Firefox. Both browsers work just fine with all forums and all web sites, with the single exception that about a week ago IE stopped working properly with PF. It screws up in all kinds of ways. Mouse hover on "alerts" and "forums" doesn't do anything. Avatars are not shown (just empty boxes). For recent threads I've posted in, my own mini-avatar in the lower right of the starters avatar also shows up as just a little empty box. Clicking on "search" brings up the left 1/3 of the search box, with the rest being cut off on the right of the browser window unless I go full screen with the browser (this didn't use to happen and still doesn't in FireFox). And then the WORST problem which is that the response box is not present so to respond in the thread, I have to copy the URL and open Firefox and drop the URL in and then use Firefox to respond (and yes, I AM logged in in IE) And all of that is just what I remember off the cuff. There are more issues I'm sure. This is a real pain in the neck. None of these problems used to be here up to about a week ago and none of them occur in Firefox. I assume this is some kind of incompatibility between PF and an IE auto-upgrade from Microsoft, but I haven't seen anyone else post on having this problem so I wonder if it is somehow my computer. I haven't touched IE since upgrading to 10.0 quite some time ago, but of course Microsoft does auto-upgrades. Any clues?