For sure with Tab Mix Plus. I'll disable that and try for you.
OK tried it (with Smart Bookmarks enabled, and Tab Mix Plus disabled). In a word, No :(

Yep. Get Tab Mix Plus. (you'll wonder what you ever did without it) :)

I believe the default behavior for a middle mouse button click is open link/bookmark in a new tab. It works for me and I don't have any tab add-ons, nor do I recall setting this.

EDIT: it's the same in FF2 and FF3

Doesnt seem to work for ff3. I'll keep trying. Anyone use the "reload every.." add on? Thats puzzling me too.

Here is a Firefox help entry that talks about it:
http://support.mozilla.com/en-.....nces_span_

In Options -> Tabs, check When I open a link in a new tab, switch to it immediately, then:
"When you middle-click on a Web link (or hold down Ctrl while clicking with the left mouse button), the page will be opened in a new tab."

billbonza, what is puzzling you about Reload every....?

Do you right click? and not get a drop down menu?
Edit. Right click on an empty part of the web page you are on (or on the Tab). You should get a context menu with the time interval options.

Jolly good :) Sometimes I get things right :)