browser that uses the least amount of RAM?

I like having a lot of pages open -

FF - seems to have a memory leak, tried another users suggestion of setting a RAM limit, but it goes from 100 to 160 used in 24 hrs, no more tabs or pages loaded.

IE - if one process goes, all associated windows go with it, + 'nuff said about it anyway.

Just after a very basic browser, doesn't have to support much at all.

Check out K-Meleon and Opera. Opera has many more features but also uses more memory.

Try out Opera. It has been years ahead of all other browsers when it comes to having lots of diffrent sites open at once. The only problems I have ever had with it is crashing due to the firefox plugin in linux.