css fixes have bene updated there:
http://kmeleon.sourceforge.net/wiki/CSSstylesheets
includes latest fixes for youtube and facebook, restores proper bluebar for facebook
copy the css code and paste it in your usercontent.css file and save, make sure kmeleon.exe and loader.exe are closed for changes to take effect, you can also use the stylish extension and create styles for the fixes.
there's also an extension to fix adding comment problem in facebook, the new facebook js reloads the page instead of accepting the comment in gecko 1.8, .. the fix restores the comment button under inputs, clicking the button will add your comment normally..the button is auto-loaded with facebook, some language specific subdomains like es.facebook.com will require to manually inject the button, simply right click on the input buffer and select facebook comment to add the button, once loaded it will affect the entire subdomain and be visible throughout the page
download the facebook commentbutton fix from this link and restart kmeleon
http://kmext.sourceforge.net/macros/FBcommentbutton.7z
the comment button can also be used with km1.6 if you prefer adding return carriages for neater paragraphs
for vimeo video not loading problems in gecko 1.8, that's a useragent problem but don't switch to firefox or seamonkey that won't fix it, use opera string..useragent>custom> and enter this string
Opera/10.00 (Windows; U; Windows NT 5.1; en) Presto/2.2.0
agentswitcher has been updated to auto switch to opera on vimeo pages, download from
http://kmext.sourceforge.net/macros/agentswitcherplus.7z