From Symantic:

Internet service provider EarthLink Inc. and Webroot Software Inc. released a report last Thursday that said an average of almost 28 spyware programs are running on each computer. More serious, Trojan horse or system monitoring programs were found on more than 30 percent of all systems scanned, raising fears of identity theft.
Full report here:

http://enterprisesecurity.symantec.c...532548&EID=625