I'm using outlook 2011 for 1,5 year now. Since a motnh I've a problem with the forward date in the messages that i'm forwarding. Normally outlook puts the forward date in the original message. Any mail which has a sent date after 1 may 2012 and is forwarded in my (and 2 other collegues) outlook 2011 will not show the forward date in the message anymore. (so normally you see:  From: ... To:.... Forward date:  .... Subject:). Mails that are sent before 1 may 2012 don't have this problem.