how can confirm that the site is really infected and it is not just a false pos.

I have a client running Avast Pro.
Their website was recently upgraded and since then Avast is blocking access.
Web developer is swearing that the site is clean.
How can I resolve that question???
Do they have a virus or is it a false positive?
Site is http://www.thekimpton.com/

error message says:

URL: http://www.thekimpton.com/
Process: C:\Program Files\Mozilla Firefox\firefox…
Infection: URL:Mal

Thank you
-=mike=-

URL:mal means they are pn a block list…for whatever reason

this seems not listed?
http://www.urlvoid.com/scan/thekimpton.com/

you may report it here if you think it is wrong
http://www.avast.com/en-us/contact-form.php

THX a lot

Hi Mike,

The site isn’t blacklisted by Sucuri either.
http://sitecheck.sucuri.net/results/www.thekimpton.com/

As Pondus states, you may report a false positive here: http://www.avast.com/en-us/contact-form.php
They are usually quick with updating.

~!Donovan