I just installed OSX Mountain Lion, and now Safari doesn't work...

All issues? I only see mention of one: Safari hangs when you try to open a page. What are the others?

Ted --

What the Akamai app on there?

Your problem is intermittent, which makes it very difficult to isolate. Please review all the responses you've given in this thread. If they're all accurate, then proceed as follows.

First, back up all data.

Hold down the option key and select Go ▹ Library from the Finder menu bar. From the Library folder, move the entire contents of the subfolder Caches (not the folder itself) to the Trash, then log out and log back in. Empty the Trash. Test.

If the problem is not solved, open the Library folder again in the same way and move the entire contents of the subfolder Preferences (not the folder itself) to a new folder on the Desktop (not to the Trash.) Log out and log back in. The account will then be pretty much in a clean state. Test. If you can still reproduce the problem, then put the Preferences folder contents back, replacing any that were created in their place, log out, and log in again.

If you can't reproduce the problem in the clean state, then start putting things back in the Preferences folder piecemeal, starting with items that seem unrelated to the issue. I can’t be more specific. After each group of items, repeat the log out/log in cycle and test. At some point, the problem may reappear, in which case you know that something in the last batch of files you restored is at fault. If it never reappears, the problem is solved.

This may be a very time-consuming process, but it’s the best I can suggest in the circumstances.

com.akamai.client.plist

com.akamai.single-user-client.plist

AkamaiNetSession.prefPane