There's a fairly large seeding of
Trojan-Downloader.Win32.Agent.brk going on.

The e-mail messages that are sent typically contain
funny.zip as the attachment.
E-mail subjects vary but are typically "spammy" in nature:
Action for pleasure
Life is good!
life is beautiful!
Double energy
Paradice in your bed
View this price
Return sunrise to your life!
You can be young again!
Paradice in your bed
We've had detection for this particular malware before the spamming really began on a large scale. On 25/07/07 At 12:27 PM
More...