Call AppleCare, they can arrange for pickup.

If the stickiness is from underneath, wiping the surface won't help. You have to take apart to clean it inside out. But pulling out keyboard keys without damaging it, is not easy.

@kapalterbang_737, you could run AHT came with your iMac DVD1. Or use more advance disk tool to scan the disk. If you can't do that. Just send your Mac to service.

You should check what app is taking up the memory in Activity Monitor.
Not just the total.
Also pay attention to the Page in / Page out.

Some site with certain plugin and script that will suck memory usage.
My jdownloader report 170+MB usage.

There are no "standard" here as each website you run might have different result. Like I said, you should check Activity Monitor to find out how much which app is taking.

This post has been edited by wei: Feb 28 2012, 04:31 PM

That's pretty normal for many iMac with glass top. It's heat+dust. Some time it can be removed by taking out the glass and wipe it. Some time the stain is trapped inside the LCD panel. Which can't be remove.

There are plenty of guide online, the question is do you have the guts, tools and skill?

Try recreate the partition. Not just erase it.

BTW, there's no need to 36-pass erase, you are stressing your HDD and Mac for no good reason.

This post has been edited by wei: Mar 9 2012, 12:34 AM

http://docs.info.apple.com/article.html?pa....4/en/mh14.html

Yes, but depends on the model, it won't be cheap.

HDD and RAM are just generic.

Which model is yours?

There will be fan noise issue if you use 3rd party HDD. Or you can get an app to fix the fan noise: http://www.hddfancontrol.com/

Actually, the only thing different is the firmware on those Apple OEM drives.

There's no need to do so, only ancient file system require it.

http://support.apple.com/kb/HT1375
http://support.apple.com/kb/HT1634

Call AppleCare, it's a defect. Well it's just cosmetic if you can live with it.

I think Apple aware and already issued an update few days ago:
http://support.apple.com/kb/DL1512

10.7 can ignore the expiry. But 10.6 doesn't and require to perform all update via Software Update or redownload the updater with fresh cert.
http://support.apple.com/kb/HT5204

Just bring your Mac along and install + test on the spot.

Best? We have use Corsair Mac Memory, KTA or OWC. All are good RAM.

This post has been edited by wei: Apr 13 2012, 11:04 AM