http://www.cloudantivirus.com/Default.aspx?lang=eng
I'm going to install this on a VM and test it out. It launched today. Basically the free version.
From what Documentation I have gotten from head office it is basically cloud technology. When Panda scans it will send the MD5 hash of a particular file for analysis.
Its incorporated into the 2009 products as well.
Give it a go and either PM me some feedback or post here.
EDIT:
• It can be installed in Windows XP and Windows Vista. The installed client takes up less than 50MB of hard disk space.
• It consumes the same bandwidth as having a gmail webpage open.
• It's a really lightweight antivirus which only consumes around 17MB of RAM.