I am running on an iMac OS X 10.6.3 using Firefox 3.6.3 as my default browser and I use Postbox 1.1.5 as my email client. Anytime I click on a link within an email message two instances of Firefox open, one with my home page and one with the site the link was meant for. This happens only when Firefox is not already open. If Firefox is running and a link is clicked on it opens normally within the open instance of Firefox. I have contacted Postbox and am currently awaiting a response to see if they have any suggestions. While this is not a serious issue it is a bit annoying. I have Firefox set to open new links in tabs not new instances of windows, so it shouldn't be that. Any help in getting this to stop would be greatly appreciated. == This happened == Every time Firefox opened == Not sure, it's been going on for quite awhile.