Just got a 2011 MacBook Pro, planning on upgrading to Lion once it's released next month for public consumption. I have an Apple SSD in the MB Pro, and my question is about performing a secure erase of the SSD before upgrading to Lion from Snow Leopard. Is it necessary? Would you guys recommend doing a secure erase as opposed to just a simple reformat before upgrading? Any harm in doing a secure erase on the Apple SSD? Thanks in advance for any info.