It's possible and easy to check. Borrowing a laptop and connect to internet in your place to see if problem disappear.

Another possibility is unstable DNS service which can cause random problem...

If you have install foxmarks in Firefox or IE7Pro in IE and other online bookmarks tools. you would get this.

I found if the problem have tens of reason, then nobody will like to answer. Your problem is not unique, which I have seen for hundred of time but still not know why.
My only suggestion is to delete...

I think guy should install some spell checker tools or daniweb can plugin a google spell checker to this areatext, because those post have to many spell error that make people who is not native...

Can you run task manager when freezing? If you can, tell me which process have 100 percent of CPU load.
Try run sfc /scannow to repaire your system files.

Do not format c under other system, you will lost important file which will cause your windows can not boot up.
You can delete all file in disk c:, and windows will prompt alarm message to tell you...

After you install the windows xp, the default user is the name you input and the passworld is blank, unless you change them

My software can do what you have said : DHTML advertisements such as fly-ins . You can test it at http://www.popuptest.com

HiJackThis Report Please. Let's see if there is some spyware.

I think your guys need post a HiJackThis report, can let see if anything unusal

IE7 + IE7Pro should be nice as MyIE2

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