Major virus on my iMac 27'

Apple as far as I know don't have a antivirus product, let alone costing $200. Also unless you have Java active in your browser I very much doubt you have a virus. Have you tried a SMC reset? It varies by iMac http://support.apple.com/kb/HT3964 What number did you call to get this so called Antivirus? This does not sound legit to me. Also how would Apple know you have had this 'keylogger' for three months? Their are keyloggers out there but generally they are put on your computer from the user side. If you managed to download something you would more than likely have had to give it your password, which I doubt has happened. I would love to know what antivirus Apple gave you as they don't make one as far as I know. You could look in System Preferences > Language & Text > Input Sources and make sure your language i set correctly. Also verify your hard drive and repair permissions, make sure the disk is verified as it could be your hard drive is on its way out.

This sounds totall bogus to me.

There are Trojans that are only proof of concept that don't do any malicious damage to your Mac and no real viruses in the wild that affect Mac OS X.

Did you actually call Apple or a real Apple Store?

I do not think these people knew what they were talking about.

And they sold you $200 Antivirus software YOU DO NOT NEED!

Mac OS X can and usually does run worse with antivirus software installed.

Uninstall it! Get rid of it! You do not need this on your Mac.

Do you remember the last thing/s you did before the iMac started acting up?

How full is your hard drive?

Have you emptied your OS X trash icon recently?

Is your OS X desktop full of icons?

Are you using a Apple wired keyboard or Apple Bluetooth keyboard or some other wireless type of keyboard?

I have to agree with the others, it does not sound like you actually talked to Apple support. Apple's anti-malware protections are all built into the system, they don't have anything you would need to purchase for $200. Further, I can't think of a single anti-virus program that costs $200! What software did you purchase, and where did you download it from? How did you come into contact with these "Apple support" folks? Note that there's a common scam going around right now where someone will call you, offering tech support for a problem you're having, and will generally try to get you to purchase and download unnecessary "anti-virus software" from them.

As for the problems you're having, the keyboard issue sounds like a hardware problem with the keyboard. Have you tried a different keyboard? If the keyboard you're using is a Bluetooth keyboard, have you tried changing the batteries? (Sometimes low batteries can cause very strange keyboard misbehavior.)

The Apple tech support number in the US is 1 800-275-2273

OK now, ironically, in trying to clear up what was almost certainly not any form of malware (aka "virus"), you contacted a bogus company who sold you what is most likely a completely fraudulent A-V package, which might have installed real malware onto your computer.

See Thomas Reed's suggestions for dealing with this. The situation isn't perfectly identical, but it's very close.

https://discussions.apple.com/thread/4757984?answerId=21090810022#21090810022

Apple dont have a seperate 3rd party company called "My tech Help" and Apple would not sell you a antivirus product you dont need over the phone either. There is Applecare you buy, not sure what it costs where you are, and it does not include any antivirus at $50. I would look to remove the product from your iMac you were sold check your keyboard, repair permissions as mentioned and contact Apple directly on the numbers listed for your country. and if your were scammed stop your card.

Where did you find that phone number? That does not seem to be a number that is associated with Apple, and I cannot find any reference to it anywhere. I would be very interested to find out more, as this may be something that other people need to be warned about.

I suspect, as others have already indicated, that you have contacted a bogus company and have, in the very best case scenario, been given awful advice and sold software that you did not need. Worst case scenario, you now have malware on your computer that you were not only tricked into installing, but that you paid them $200 to show you how to install it.

WZZZ already provided you a link to an earlier post dealing with a similar situation, and I see that you marked it solved. I would reiterate that, in your case, it's probably important to completely erase your hard drive and start over with a freshly-installed system, as described there.

That's why I ask what the last thing/s you did just prior to your iMac slowing down?

That is why I asked you how full is your hard drive?

Do you have a lot of icons on the desktop?

You never answered anynof these questions.

Message was edited by: MichelPM

You've got to pay close attention to the address of the site you're going to. Only sites ending in "apple.com" actually are associated with Apple. A common approach among scammers is to use domains that sound official, but the ending gives them away if you pay attention. Taking the machine to Apple is a decent approach, as they should be able to help identify any bad software that might be installed, though I still say that erasing the hard drive and starting over from scratch is the best way to go.

As to why the problems started in the first place, you've been asked a few questions and given a few possibilities regarding that problem. However, I would not recommend trying to address those problems until after you deal with the current problem. You may find that erasing the hard drive and reinstalling from scratch fixes those other problems... and then again, you may not.