Got hit by a good April Fools joke yesterday. I'd been having trouble with my Outlook mailbox filling up quickly and I figured out I had 50 MB worth of stuff in my calendar and in this "synch folder" where apparently Outlook keeps a record of email when it has trouble synching with the mail server.
So I deleted the stuff in the synch folder and archived all my old calendar stuff, which freed up a lot of space.
My mistake was sharing my new-found info with the people I work with, thinking it might help them to (this is what I get for being a good Samaritan).
I emailed them all and told them what I was able to do. Suddenly I was inundated with emails telling me people were getting weird errors, pop-up messages that certain parts of Outlook were admin-accessible only, and even references to the Conficker worm (which was warned about on our company's homepage).
Of course, dupe that I am, I fell for it all. I didn't get suspicious until one guy said it removed half of his future calendar notices - that's when I remembered it was April Fools day, and thought maybe I had been taken for a ride.
See...no good deed goes unpunished.