Molly Jefferson popped up on my window asking If i am having trouble. She was a Apple/MacExpert. Is this Legit???

It is a scam. Never, ever respond to such messages that you haven't initiated.

No, it's a scam. You also may have Adware installed. To remove

The Easy, safe, effective method:

http://www.adwaremedic.com/index.php

If you are comfortable doing manual file removals use the somewhat more difficult method:

http://support.apple.com/en-us/HT203987

Pete

Highly unlikely. Never respond to any sort of message that suggests you have a 'problem' with your Mac and offers to fix it. The are scams - at best to sell you unnecessary software or services, or at worst to take remote control of your Mac and steal data.

('What I tell you three times is true.' - Lewis Carroll)

Do you have MacKeeper installed on your computer? If you're not sure, are you seeing something like this:

If you do have MacKeeper, uninstall it immediately. It's a scam. See:

Ongoing MacKeeper fraud

(Fair disclosure: I may receive compensation from links to my sites, TheSafeMac.com and AdwareMedic.com.)

I wonder why the FTC, the BBB, the Consumer Fraud Protection people, et al, haven’t gone after these fraudsters. Where are the lawsuits and criminal charges?

Thanks to the Internet your ‘friendly neighborhood thief” can be halfway around the world - and probably is. The FTC doesn’t have much power in the US, let alone outside it.

Marjorie Polack wrote:

I have MacOptimizer and MacTracker on my computer. Are these OK? Would you please suggest a good program to monitor and clean my system.

MacOptimizer is garbage, as are all other programs designed to "monitor and clean" your system. That is not needed, and can be harmful. Uninstall MacOptimizer and don't install it, or anything else like it, again. For details, see:

The myth of the dirty Mac

As for MacTracker, that should be fine from what I can tell about it, unless it has some kind of "cleaning" feature that is not immediately apparent from looking at the MacTracker website.

(Fair disclosure: I may receive compensation from links to my sites, TheSafeMac.com and AdwareMedic.com.)

lkrupp wrote:

I wonder why the FTC, the BBB, the Consumer Fraud Protection people, et al, haven’t gone after these fraudsters. Where are the lawsuits and criminal charges?

How do you prove fraud to a bureaucratic organization in which few, if any, understand the lack of technical merit to the claims of an app like MacKeeper?

Heck, there is at least one Mac anti-virus program that has, for many years, failed to detect the vast majority of all Mac malware in existence in real-world testing. I'd call MacKeeper a lesser order of fraud than that, yet even so, I still see inexperienced people here recommending that anti-virus app from time to time.

The software market today is like the Wild West... laws are weak and inadequate, and people can do whatever they like as long as they don't cross the invisible line into creating actual malware.