I know you are, bless you.
The decrease in speed included the boot time, time to open windows and apps, time coming back from sleep, even Safari's rendering seemed to slow down
Ok, well I just wanted to check that was what you were talking about, and to give you a chance to think about it. The reason being, none of thos save perhaps for Safari related issues, have anything at all to do with the aount of RAM you have installed.
Boot time won't be affected by RAM unless you have less than 128mb..
Opening of apps or windows won't be affected by RAM unless you already have lots of them open.
Time coming back form sleep is not dependant on RAM
Safari rendering speed is dependant on what you're running within Safari, there are a well known list of things that affect the speed of Safari about as long as both my arms. Flash is the real memory hog when it comes to Safari, which why a lot of people that use flash often use a different browser.
My point of asking is because people blame RAM for many things and computers being slow, when in truth RAM has nothing to do with much of it.
There is a HUGE misconception amongst so many users on this forum that end up wasting their own money and that of other people with poor advice on how much RAM people need.