I am currently using Firefox 4.0 as it says with the "About Firefox". But when I'm trying to install certain add-ons for FF4, it still says that I'm using Firefox 3.6.8 :|
To be more particular, I'm trying to install the "Shine Bright Skin" theme which is for Firefox 4, but it says that it is not compatible with my current version, it says I'm using FF3.6.8 but I'm really using FF4. Shine Bright Skin
Wšě wotmołwy (2)
According to the "More system details..." you have a preference set called general.useragent.override which sounds like the most likely culprit. Use the about:config preference editor to clear that preference.
(1) Type or paste about:config into the location bar and press Enter. Click the button promising to be careful if it appears.
(2) Type agent into the filter box and wait for the list to be filtered.
(3) Right-click general.useragent.override and choose Reset to return that preference to its default value.
Any luck?
By the way, this override might have been set by an add-on to improve compatibility with something else... good luck tracking it down.
You also need to update your graphics display driver from 4-12-2007:
Adapter Drivers nv4_disp Driver Version 6.14.11.6501 Driver Date 4-12-2007 Direct2D Enabled Blocked on your graphics driver. Try updating your graphics driver to version 257.21 or newer. DirectWrite Enabled false (0.0.0.0, font cache n/a) WebGL Renderer (WebGL unavailable) GPU Accelerated Windows