Dee, it's a PM that comes through [as part of the carrot game] that says "_____ stole your carrots while you were offline! Better lock them up next time" or something to the effect of that.
CrazeePony, the only advice I have for you is turn off the game or lose all your carrots [the PMs stop once you only have one carrot]. There's no way to *only* stop the PMs. :(
There's an option to exit the game in your user CP area, or a moderator can toggle the switch for you.
Fabio - 13 year old Arabian/Lipizzan gelding
Rest peacefully, Lacey.