aflegg | # 11 | 2008-01-11, 09:51 | Report

If "View > Fit page to width" is ticked, I have the exact behaviour as described. With it unticked, and the browser full-screen, Facebook looks perfect.

dogsbody | # 12 | 2008-01-11, 11:57 | Report

LOL, brilliant, that's exactly what it is! Thank you

TabletKev | # 13 | 2008-01-11, 18:36 | Report

Glad it worked for you.

Still, my question goes unanswered. Could someone please post the five general.useragent values from about:config ?

dogsbody | # 14 | 2008-01-11, 19:16 | Report

Here you go...

dom.window.useragent.policy : true
general.useragent.contentlocale : chrome://navigator-region/locale/region.properties
general.useragent.locale : en-GB
general.useragent.security : U
general.useragent.vendor : Firefox/3.0a1 Tablet browser 0.2.2 RX-34+RX-44_2008SE_2.2007.50-2

TabletKev | # 15 | 2008-01-12, 04:27 | Report

I actually discovered the fix:

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.0) Gecko/20070423 Firefox/0.8

is the correct string.