IE7 and QL toolbar problems in guest account

Why would Internet Explorer 7, and associated things like the quick
launch toolbar, suddenly not work in my XP SP2 Home Edition guest
account?

This started when someone spending the weekend with us asked
innocuously enough how we accessed the internet from the computer's
guest account. I got on, IE 7 wouldn't save its preferences and half
the time wouldn't connect to the internet. I tried enabling the quick
launch toolbar (which had been there last time I looked), and got an
error message, and then couldn't do it (show quick launch toolbar)
again and again and again.

C:\Documents and Settings\Guest\Application Data\Microsoft\Internet
Explorer\Quick Launch was there, and properly populated. The ideas in
http://windowsxp.mvps.org/QLError.htm and other such sites did not
work. I even installed the very newest version of IE 7, something
newer than what I'd had, and that didn't fix anything. I still
couldn't create a quick launch toolbar from the guest account, or
access the internet fully from IE. IE worked fine in the other
accounts on the computer (one administrator and the others non-admin),
and FF 3 worked fine from the guest account.

Finally, I deleted the guest account, then recreated it, and it worked
perfectly from the start, included after restarting the computer. I
can access the internet fully from IE7, create a quick launch toolbar,
do pretty much anything one can do from a guest account.

What could have caused the problems I described?

<don.DeleteThis@nospam.4me> wrote in message
news:b0dlb49ubgfaf9c53pasq4mt24gqa8hunn@4ax.com...
> Why would Internet Explorer 7, and associated things like the quick
> launch toolbar, suddenly not work in my XP SP2 Home Edition guest
> account?
>

Disable the guest account. It's a security risk.....