If you have found Trojans in the Kaspersky scans, have they been removed? How?
I am still not able to determine whether you are having a problem in the system that is causing it o 'freeze' on some sites, or whether there may be a server problem on the site, which would show the 'hand'. IF it is a server problem, it should time out at some interval if you do nothing and you would get a message to that effect.
Your Toshiba computer came with 1 gigabyte of PC 4200 RAM (Samsung). That should rule out a memory problem-IF the memory is good. Tell me this please: if you stop the load using Ctrl/Alt/Del, can you then go back and load the page? Do you have to reboot first, THEN load the page.
So: 1. RAM information, 2. Kaspersky results, 3. Page loading at all- same site after reboot?
Additionally, you should also have at least 2 spyware/adware programs. Do you have any? Have you scanned with them?