Ok this might sound strange but delete the original home theme then put the BP-home theme in your themes directory. this is what i did and it worked perfectly
Right its fixed!!! woooooooooooohooooooooooooo!
I deleted WPMU and BP off my server uploaded WPMU again and downloaded the latest trunk files then whacked it up and hay presto its all working!
Thank you so much for eveyone who tried to help me though I appriciate it so much thanks again!
Here is my home theme folder with css, you will see I havent modified anything. If someone can take a wee look and see where im going wrong please
http://uploading.com/files/45XJ22TL/buddypress-home.zip.html
No the default MU theme works fine.
I have tried moving everything to a _temp file still the same occurs
and all the css files are present and correct, also i havent modified any of the file names so should all be correct. Should i be trustworthy and let someone have a look at it?
Yep it was all set to 644, I am running thin on ideas 
yeah they are in the directory, any other ideas?
where is the css sub folder? there is a css folder in there already.. am I having a tired blonde moment?
