Hello, I'm on a late 2008 Alu MacBook on 10.6.6 and recently I've seen that my screen flashes orangewhen I boot my Mac up. It boots normally on the white screen with apple loge, then the blue screen shows up and then it goes orange for about one second. I'\ve seen it occur a couple times now, and I'm concerned. Is this the screen of death? I've verified my permissions and the SMART status of my HDD, nothing really seems wrong. Can you help me about what I should do? Maybe reinstall my OS? My Mac is lagging quite a bit lately, often taking way too much time for what should be quick tasks. Thanks in advance.