iMail / gmail problem

I bought a new iMac yesterday and set up my gmail on it under iMail. 2 hours later it sent around 100 old gmail messages to my Blackberry. I thought that was odd and I spent the next 5 minutes deleting them off my Blackberry. Tonight they all showed up again at about the same time as last evening, which was at 6:40 pm. I logged into my gmail account and deleted everything out of every folder that I could and even cleared them out of the deleted folder. I am hoping they don't show up again. Has anyone else ran into this problem before?

Posted from my CrackBerry at wapforums.crackberry.com