Hi,
my friend has this problem. Time to time the pop up shows on his computer saying something like this:

Kurýrn* služba
Zpráva od LEBZ pro You dne 2.6.2004 22:06:20

TORONTO PHARMACEUTICALS
TOP MEDS: VIAGRA, CIALIS, XANAX, VALIUM, AMBIEN ....
Our generics are the exact formula as the name brands, only much cheaper.
Now you can save monay and receave thhe same treatment you need!

NO prior prescription needed!
Order Toronto to get the biggest discounts!

Type the following WEB address in your browser:
WWW.LRBZ.US
I think its some kind of adware or spyware but I did't find what exactly it is and how to remove it. Anyone knows? Thanx for answer.