Hey all, My PowerBook doesn't always make the boot sound. Seems like 1 in 10 boots, it doesnt do it. I see no problem with performance or stability. What could be causing this? Yes I did upgrade the RAM with Kingston KTA-PB533/1G , which mobel.com tells me is the most compatible. We have had no problems with this RAM in the shop, so I don't think the RAM could be causing it. Also, I can the AHT about a week ago to see if there was a problem with my fans, all came back good. Any ideas?