identify postings that I have already read.
 

How can I know which postings I have already read? Before we got our new computer, the ones I had read were different color; now they aren't. (in what's new section)

If a brand new computer isn't changing the colors of links after you've read them, there's something in your cookie settings that's telling it to not save cookies. Poke around in your browser settings.

If you get the problem on an old computer, usually it means that you need to clean out temp files, it's full and can't hold anymore.