First of all, sometimes Extensions can interfere with one another. That MAY be the case with your using both Tab Mix Plus and New Tabs at End. They both have a function that you can set for where new tabs appear. TMP has options concerning focus on new tabs.

My suggestions are:

1. Un-install New Tabs at End (Tools > Add-ons > Extensions, click New Tabs at End, click Uninstall, then exit and restart Firefox).
   • If using no other extension that affect where tabs appear (to the right of current tab or at end of all open tabs), a simple preference change can affect that change for you, and you have one less extension to be concerned with. I have also made this change as TMP did not have the Focus options to do this when the "new tab at end" feature first appeared or when I first started using the version of Firefox in which this feature appeared:
     1. Type about:config in the URL bar and press the Enter key.
        • See: http://kb.mozillazine.org/About:config
     2. If you see the warning, accept it (promise to be careful).
     3. Filter = browser.tabs.insertRelatedAfterCurrent
     4. Look at the "Value" column (false=open at end, true=open after current tab); Value = true is the default.
     5. Double-click that preference to toggle the value from true to false, or false to true
     6. Restart Firefox (File > Restart Firefox)
     7. See: http://www.mydigitallife.info/2010/02/01/change-firefox-to-open-new-tab-at-far-right-end-of-tabbar-disable-insert-next-to-current-active-tab/
2. Tab Mix Plus settings
   • Open the Tab Mix Plus Options (Tools > Add-ons > Extensions, click Tab Mix Plus, click Options)
   • Click on Events > Tab Opening
     1. Place a check mark before "Open new tabs next to current one"
     2. I have checked "Open other tabs next to current one"
        1. I have un-checked "Only if related to current tab"
        2. I have un-checked "Change opening order"
     3. I have checked "Open duplicated tabs next to original"
   • Click Events > Tab Focus
     1. If you ALWAYS want to stay on the current tab and let the new tabs open in the background, un-check everything. These selections will/should over-ride Tools > Options > Tabs, "When I open a link in a new tab, switch to it immediately"

See if the above changes give you the results you are seeking. Tab Mix Plus has lots of options. You may need to change one or two settings at a time until it behaves the way you desire. Keep track of the changes you make so that you can easily re-trace/re-set when the results are not what you want.

Hmm, I think I have it working correctly !! I had already uninstalled the 'New Tabs at End' extension, since that was the opposite of what I wanted (but figured I'd try anyway, maybe there was an 'uncheck' box).

I think the way I had the Tab Mix Plus settings was screwing it up - I had 'Open new tabs next to current one' unchecked, thinking that the next option 'Open other tabs next to current one' and it's sub-options would do it....but that didn't work. I changed the settings to exactly what you suggested, and it seems (fingers crossed!!) to be working now the way I want it to.

I had all the 'Tab Focus' options unchecked orginally, so that was fine.

Now that it seems to be working, the name or title of each new tab is red (was black before) - not sure why, but I guess I can live with it.

Thank you very much !!!!!

TMP has so many options, I had to "play" with them a bit to get things working as I wanted.

You can change tab text/background coloration in TMP options on Display > Tab >Highlight Color > Customize.

• I have Current Tab set "Black" text, "Green" background for easy visual identification.
• I believe the default for Unread Tabs is "Italic" (may be my setting), "Red" text, no background color. Tells you which tabs you have opened but not yet viewed.

To repeat what I said above: You may need to change one or two settings at a time until it behaves the way you desire. Keep track of the changes you make so that you can easily re-trace/re-set when the results are not what you want.

TMP support forum: http://tmp.garyr.net/forum/

Found the tab color settings; changed one, now my tabs are back to opening crazily, and when I open them using my bookmarks (as I do all the time), they overlay each other. Sigh. Disabled TMP for the day; gotta get something done other than futzing with this. Why oh why did I upgrade??? Thanks for the link to the support forum

Sorry you are having problems. Changing the color should not have affected the other settings; sounds like there is some kind of conflict somewhere in your system/setup. Did you check the other settings in TMP after changing the colors to be sure the settings are "sticking"? Have you tried exiting Firefox and restarting to see if some of the settings are changing or if the changes you intended are taking place?

Has nothing to do with the Firefox upgrade. I have successfully used TMP through upgrade after upgrade from Firefox 3.0 forward without a glitch. When updating TMP, you need to carefully review for any changes TMP made to their Extension and look for any new setting(s) they might have added.

It took me quite some time to get my settings just right. It is really difficult to diagnose a problem like this at a distance; if I could sit in front of your computer, I might be able to determine the cause(s), but that would cost you way to much.

Try posting on the TMP forum (I gave you that link above) where the "experts" on TMP might be able to assist you. The more detail you give about the problem(s) you are having in your initial post, the more likely you will get a quick resolution to the problem. You can also give them a link to this forum post for reference.

Good luck.