I disagree,
in part, with the above suggestion. Since your account runs fine with Norton and you can connect to the Internet fine, that would suggest it is a problem with that account, and not Norton. I can see Norton blocking her access to the Internet (but not Intermittantly), and certainly Norton has a history of bogging systems down due to bloat (though the latest version is much better). But freezing
suggests (but does not prove) it is something else. And while I am not against dumping Norton, I am against dumping it (and advising dumping it) without having a viable alternative
at the ready. With the release of Windows 7, Windows Firewall is now a fully functional and capable firewall. Also,
Microsoft Security Essentials (MSE) has proven, and been certified as a very capable anti-malware program and I have been using both on all my Win7 systems with great satisfaction - and no bloat. Should you decide to dump Norton, download MSE
first. Then uninstall Norton, enable Windows Firewall, reboot, then install MSE from your downloaded MSE install file. Do NOT go without a firewall or anti-malware protection.
If me, I would log in with your administrator account, backup her data she does not want to lose, then delete her account and create a new one. Make sure Windows is fully updated with all the latest updates. And make sure your daughter practices safe computing by avoiding risky practices like opening attachments and downloads without scanning first, or visiting sites badguys wallow in - in particular peer-to-peer (P2P) sites that facilitate
illegal filesharing of copyrighted materials, such as tunes, videos, and published documents. Note too that social networking sites like Facebook, and their members, are also primary targets for badguys and their malware.