Here's my situation (I'm sure I'm not alone). I'm a long time PC user and Mac dabbler (Wife's a mac user). My primary PC is 6 years old and I'm ready for a new computer. I'm looking to get an iMac but am really concerned about all these freezing issues. Here's my question: If I buy an iMac from a authorized reseller (Amazon or MacMall) and it has the freezing bug, can I take it to my local apple store (while it's still under warranty) and exchange it for a new one?