Strange Google error: "your query looks similar to automated requestsfrom a computer virus"

When I do a google search (www.google.ca) on this:

Windows Live hotmail

(no quotes around that phrase)

I get this:

-------------------
We're sorry...

.... but your query looks similar to automated requests from a computer
virus or spyware application. To protect our users, we can't process
your request right now.

We'll restore your access as quickly as possible, so try again soon.
In the meantime, if you suspect that your computer or network has been
infected, you might want to run a virus checker or spyware remover to
make sure that your systems are free of viruses and other spurious
software.

We apologize for the inconvenience, and hope we'll see you again on
Google.
--------------------

That was with firefox.

I performed the same search using IE6, and it worked fine. I opened
another instance of Firefox and tried again, and it worked sometimes,
and other timed I get that message.

PS: when I first got that message, I had a little "TM" symbol after
the "Live". But even after removing it, I still got the message.

Virus Guy <Virus@Guy.com> wrote in news:46E0D39C.E193BDBE@Guy.com:

> When I do a google search (www.google.ca) on this:
>
> Windows Live hotmail
>
> (no quotes around that phrase)
>
> I get this:
>
> -------------------
> We're sorry...
>
> ... but your query looks similar to automated requests from a computer
> virus or spyware application. To protect our users, we can't process
> your request right now.

I get this on occasion when using google groups for searching via FireFox.
I usually just clear the cookies and the problem goes away.

> PS: when I first got that message, I had a little "TM" symbol after
> the "Live". But even after removing it, I still got the message.

I've never observed this symbol. How did you remove it?



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