I am seeing .t$m files showing up on my PC.
The all start with a string of random characters (like: $6AAC58CD.T$M), they are created once a day in c:/temp and are all about 222M in size. They seem to contain a tab separated text file database of folk's web searches (but not my searches!)!
The 1st line of each file is:
AnonID Query QueryTime ItemRank ClickURL
Each line (record?) then has:
an anon user ID tag
the search phrase
I did scan for virus and spyware infections but nothing...