Session terminated with IE

[JDComplex]

I am having problems with secure sessions within Internet Explorer, I am able to login to my accounts on a number of sites and yet when I try to navigate to another aspx page, within the account...my session is dropped and I am logged out. It works on my other computer using internet explorer 7.0 and I am able to do so with other browsers on this machine. I have added the domains to my trusted sites, ensured that the domain is not on the restricted sites list, added the sites to my privacy sites area, the popup blocker area set the cookie sessions to always allow. I have ensured that in the advanced settings option for the browser that ssl 2.0 and tls 1.0 is checked. I have checked my MTU and it is ok...does anyone have any ideas what else I can do? It appears that for some reason the session is broken by my browser when I use the navigation that is working on my other computer or in my other browsers on this computer.