Hi, I recently had a problem with my uMBP 17" with specific keys that during boot were ignored (like the option key or eject key), and brought it to an ASP for repair. The ASP investigated and concluded that there was something wrong with the EFI, and decided that the logic board needed to be replaced. After repair I noticed that System Profiler doesn't list a serial number anymore for this machine. All it says is: "Serial Number (system): System Serial#". It's rather annoying because I would like to buy Apple Care for this machine but that seems not possible without a serial number, and some of the shareware apps I have need a serial number for activation. Is this normal with a new logic board or did the ASP simply forget to enter my (or another) serial number?