All applications requiring internet unexpectedly closing (Safari, iTunes, iChat, Skype, etc) How do I fix?

Question

My wife is using a Macbook using OS X version 10.4.11.  It is about 5 years old.  Recently, all applications that require internet access (Safari, iTunes, iChat, Skype) are quitting and shutting down after only a few seconds of being open.  We have tried restarting the Macbook, resetting Safari, emptying caches and cookies, and uninstalling third party add-ons with no luck.  Other aplications like microsoft word, preview, and photo booth all work fine.  It seems to be just the aplications needing internet.  Any advice or a point in the right direction would be greatly appreciated.  Thank you!

Answer 1

Since you were able to create a new library indicates that your current library is damaged. So try the following: make a temporary, backup copy of your library if you don't already have one (Control-click on the library and select Duplicate from the contextual menu) and  apply the two fixes below in order as needed:
Fix #1
1 - Launch iPhoto with the Command+Option keys held down and rebuild the library.
Since only one option can be run at a time start with Option #1, followed by #3 and then #4 as needed.
2 - if #1 works you can go into the Accounts preference pane and add your Facebook account back and give it a try.  Then close and reopen iPhoto.
Fix #2
Using iPhoto Library Manager  to Rebuild Your iPhoto Library
Download iPhoto Library Manager and launch.
Click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option
In the next  window name the new library and select the location you want it to be placed.
Click on the Create button.
- add your Facebook account to the Accounts preference pane and test it with the new library.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments.  However, books, calendars, cards and slideshows will be lost. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.