I have 1.25G of Ram in my PB G4 1.5Ghz. I've been running a 1 gig stick and a 256meg stick for about a year and a half now. During the last couple of days, certain applications, even Safari have been running sluggishly and I've been seeing a lot of spinning pinwheels. So yesterday I had the bright idea to check my "About this Mac" and it only listed me as having 1gig of ram. I then went deeper and on the memory section of the System Profiler it says empty for where my 256meg stick of RAM is. Do you think this means the stick is bad or that the slot has gone bad? Is there anyway to test the hardware?