odd taskbar behavior

I use the quick launch buttons on the task bar for launching all of my regularly used programs.

Recently, something odd has started to happen that has never happened before and I'd like to get things back the way they used to be

Firefox (16.0.2) is my primary browser (Windows 7 home premium SP1)

Now, when I open FF, it's icon(s) appear on the far right of the quick launch icons instead of in the middle of the row where I have all my browser quick launch icons.

If I remove all FF icons from the bar and then put a new one in - in the correct location - when I open a FF window, a 2nd FF icon appears on the far right of the quick launch icons.

If I open other FF windows, they stack under the icon that's to the far right - in the wrong location.

Any ideas? Probably just a setting that got trashed.

You could try rolling back your computer to a date/time prior to this problem by using a system restore point.

System Restore

The IE icon does perform normally, so it does seem that it might be FF. My concern with removing and reinstalling FF is that there are a ton of settings that are perhaps more important to me than where the icon sits on the bar, and I think it's likely some or many of them would get messed up and I'd be worse off.

If suggestions from marsmimar and gini doesn't fix your issue, can you post a screen print?

Now, when I open FF, it's icon(s) appear on the far right of the quick launch icons instead of in the middle of the row where I have all my browser quick launch icons.

I don't understand the issue and what you see

My primary browser is FF, I have FF pinned to the taskbar, and I use my own (W7 64) toolbar rather than Quick Launch.
So my setup is similar to yours, and i don't have issue(s).
Can you create your own custom toolbar and see if you have the same problem?

In my screen print the "W7 64" toolbar is what i use for "Quick Launch" programs...
Here is what i see...can you post a screen print showing the problem you see?

Here's an annotated screen shot of the problem

Is FF pinned to the taskbar on the left?
- what you pointed to on the left in the screen print

Then when you open a new FF window it adds a new icon in the taskbar ???
- on the right in your screen print

Also, I don't see Quick Launch or any toolbar in your screen print...

Maybe your "Taskbar Combine icons" is the issue...
See if you have "Always Combine" selected.

Here is what i have for taskbar properties, can you post yours?