quarentined e-mails

[#1]

for a long time I have not had any quarantined e-mail, now all of a sudden loads of then, I have not retrieved any so not sure if they are Virus or trojan, is any one else seeing this?

[#2]

I have had two or three recently - when I looked in the email that was sent for each one to warn me it had been quarantined, it was obvious the content was dodgy...

[#3]

I've had a couple recently. I think that PN may have switched to  a different anti-virus program. (Perhaps Avast instead of McAfee?)
Jim

[#4]

AFAIK it's the Cloudmark appliances that do the virus detection. Prior to February we were relying on Ironport instead. I'm not 100% sure which detection engines each solution is dependent on.