I have had several kernel crashes and have reinstalled lion again.

Question

The crashes keep on coming, so I bought Mackeeper and it told me that my system was clean but it still crashes. Most of the crashes happen while on the internet either watching "blink box" or shifting between sites. Mackeeper atuomatically checkes my internet security and I am at a loss at to what is causing it. It is always a kernel ( panic attack) and the screen always goes gray as the line comes down. Does anyone know what is happening. I have had mac's all my life and this is the first mac that I have ever had a problem with.

Answer 1

First, MacKeeper is a scam. Uninstall it by dragging the application to the Trash. Some people have reported being able to get a refund from the developer.
If you're able to boot, launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Console in the page that opens.
Select the most recent panic log under System Diagnostic Reports. Post the contents — the text, please, not a screenshot. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header and body of the report, if it’s present (it may not be.) Please don't post "shutdownStall" or "hang" reports.
If you can't boot in the usual way, try a safe boot. The instructions provided by Apple are as follows:
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
During startup, you’ll see a progress bar, and then the login screen, which appears even if you normally log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Safe mode is slower than normal, and some things won’t work at all.
Note: If FileVault is enabled under Mac OS X 10.7 or later, or if a firmware password is set, you can’t boot in safe mode.