safari and amazon - toxic - needs a fix

From the menu bar, select

 ▹ System Preferences ▹ Network

If the preference pane is locked, click the lock icon in the lower left corner and enter your password to unlock it. Then click the Advanced button and select the Proxies tab. If any proxy options are selected, deselect them. You don’t need to change the bypass or FTP settings. Click OK and then Apply. Test. The result may be that you can't connect to any web server, so be prepared to restore the previous settings if that happens.

I would double check your order history for the days you couldn't get in. Just in case.

Back up all data.

Launch the Keychain Access application in either 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.

Select System from the Keychain list on the left side of the Keychain Access window. Then select Certificates from the Category list. A list of certificates appears on the right. From that list, delete any item that has a red "X" badge on its icon, indicating that the certificate is invalid or untrusted. Also delete anything with "Amazon" in the name. You'll be prompted for your administrator password.

Quit Keychain Access. If you made any changes, test.

If the above steps don't resolve the problem, continue as follows.

Select the text below (not including the blank space at the end of the line), then copy it to the Clipboard (command-C):

www.amazon.com

Launch the Network Utility application in the same way you launched Keychain Access.

Select the Lookup tab and paste (command-V) into the address field. Press return. Post the output that appears below – the text, please, not a screenshot.

Select the Ping tab and do the same. The operation will time out, because Amazon doesn't respond to pings. I'm only interested in the address at the end of the output.

Your System keychain is corrupt. You may be able to restore it from a backup that predates the corruption, if you have one and you know when that was. Otherwise, reinstall and reupdate OS X.

Enter Time Machine and go to the top of the timeline on the right. Move the cursor over the topmost hash mark, which represents your oldest snapshot. What date is shown?

For more details, start at about 1:00 into the video linked below.

Mac OS X: Time Machine Basics

What is the latest date at which you can be sure you didn't have the problem?

Let's try this first.

If you have more than one user account, you must be logged in as an administrator to carry out these instructions.

Triple-click anywhere in the line below to select it:

sudo systemkeychain -f -C

Copy the selected text to the Clipboard (command-C).

Launch the Terminal application in the same way you launched Keychain Access.

Paste (command-V) into the Terminal window. You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. You don't need to post the warning. If you don’t have a login password, you’ll need to set one before you can run the command. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.

Post any lines of output that appear below what you entered — the text, please, not a screenshot.

Reboot, then launch Keychain Access again and check the System keychain. Are there still any invalid certificates? If not, try Amazon again.