Safari not displaying proper webpage design

HI all, thanks for taking the time to view this thread.

Just recently Safari has stopped displaying the pages as they should, instead, it shows standard Times New Roman, with little font editing including size, and shows a white background. this doesn't happen on all sites though, such as MR or the apple homepage. I am still on Leopard but the most updated version, getting snow leopard soon.

Many thanks for any help.

 

Nope, everything is as it should. the weird thing is that different web pages display differently - the vast majority of pages display correctly with only a few wrong.