I (and others I have asked about this) have noticed a new behavior for windows in XFCE 4.4.1 and 4.4.2 that was not present in 4.4.0
If I have Firefox open on desktop 3 and Thunderbird or pidgin open on desktop 4 and I click a URL link the link used to open in a tab in Firefox on desktop 3. With the newer versions of XFCE however the link is opened in a tab in Firefox as expected but Firefox is moved to Desktop 4 (the current desktop).
The particular desktop number and applications involved do not seem to effect the outcome. I have tried both distro supplied versions (Xubuntu, Fedora, Slackware) of the applications as well as standard versions.
I am hoping there is a new setting or something that will revert this to it's previous behavior.
It seems this is covered here.
And there is a fix here:
This is so irritating to the point of my not using XFCE anymore. As I LOVE XFCE I am really glad there is a fix even if it is kind of a hack rather being a WM Tweak where it should be.
Anyway I am glad I can keep using XFCE and hope this helps anybody else that is frustrated.