Keyboard shortcut conflict with Firefox 3.6 - CTRL+F4 issue

[GoogleCodeExporter]

What steps will reproduce the problem?
1. CTRL + F4
2.
3.

What is the expected output? What do you see instead?
Every time I press CTRL + F4 it does a double key stroke. Instead of closing 
one tab Firefox closes two tabs in a row. I tried too deactivate the add-on and 
the keyboard shortcut when works as normal. Please fix this little issue and 
I'll be very happy too install this fine product again. I known CTRL + W have 
the same function, but I'm too used too the other shortcut function.

What version of the product are you using? On what operating system?
I'm using the most recent version (v0.4.2.4), Firefox v3.6.3 on Windows XP SP3.

Please provide any additional information below.
I have also tried too uninstall Tab Mix Plus, but CTRL + F4 still does a double 
key stroke.

Original issue reported on code.google.com by martin.j...@gmail.com on 18 Jun 2010 at 10:23

[GoogleCodeExporter]

Hi, thank you for your feedback.
I tried to reproduce the error, but on my computer with the same configuration 
(FF 3.6.3, Win XP SP3) only one tab is closed, as expected.

Does this behavior occurs every time you press Ctrl+F4. Or are there some 
exceptions, e.g. only on certain pages or under certain circumstances.
Could you send me a list of your insalled addons.
Thanks 

Original comment by Rudolf....@gmail.com on 26 Jun 2010 at 12:09