Malware notification from Google

[EV1L]

I received this email from Google (Google Search Quality <noreply@google.com>),

Dear site owner or webmaster of xxxxxxxxx.com,

We recently discovered that some of your pages can cause users to be
infected with malicious software. We have begun showing a warning page
to users who visit these pages by clicking a search result on Google.com.
Below are some example URLs on your site which can cause users to be
infected (space inserted to prevent accidental clicking in case your
mail client auto-links URLs):

http://www.xxxxxxxxx .com/pm/xxxxx
http://www.xxxxxxxxx .com/index.php
http://www.xxxxxxxxx .com/info/xxxx

Here is a link to a sample warning page:
http://www.google.com/interstitial?u...x.com/pm/xxxxx

We strongly encourage you to investigate this immediately to protect
your visitors. Although some sites intentionally distribute malicious
software, in many cases the webmaster is unaware because:

1) the site was compromised
2) the site doesn't monitor for malicious user-contributed content
3) the site displays content from an ad network that has a malicious
advertiser

If your site was compromised, it's important to not only remove the
malicious (and usually hidden) content from your pages, but to also
identify and fix the vulnerability. We suggest contacting your hosting
provider if you are unsure of how to proceed. StopBadware also has a
resource page for securing compromised sites:
http://www.stopbadware.org/home/security

Once you've secured your site, you can request that the warning be
removed by visiting http://www.stopbadware.org/home/review and
requesting a review. StopBadware and Google will jointly investigate
and reply to you with our findings. If your site is no longer harmful
to users, we will remove the warning.

Sincerely,
Google Search Quality Team

Anyone receive similar email too? What should I do? I ran CPX ads, is it the cause?

[mji2010]

I've seen it before, but its never happened to me personally. I've seen it come up in the serps before too.

[seo ranter]

I think you have to contact stop badware.org. first get the spyware removed from your site...

[mrcrowley]

I've seen this come up in the serps too, when you try to visit the site google warns that the site may harm your computer. On occasions i've ignored this and found no adverse effects from such sites.

[EV1L]

I remove my CPX ads and submit a request for a review. We should see...

What a luck....

[godmode]

you better do it. People now a days dont like to visit websites which are clearly flagged as "This site might harm your Computer".

Getting yourself flagged by google is prolly the last thing u can think of.