IPhoto not connected to internet after latest update

Question

I just updated my iPhoto last night according to notification.  Then, everytime I change desktop, either to LR3 or CS5 and return, iPhoto is no longer connected to the internet therefore, I cannot upload to Facebook, Flicker or email from iPhoto.
I have to close iPhoto, restart iPhoto, then its OK.  How silly.  It was never that silly before.
What's happened?  Who made what change to the good code?  Is there a fix?

Answer 1

As a test  launch iPhoto with the Option key held down and create a new, test library.  Import some photos and test to see if the same problem persists. Does it? If it does then try the following:
1 - delete the iPhoto preference file, com.apple.iPhoto.plist, that resides in your
     User/Home/Library/ Preferences folder.
2 - delete iPhoto's cache file, Cache.db, that is located in your
User/Home/Library/Caches/com.apple.iPhoto folder (Snow Leopard and Earlier).
or with Lion and Mt. Lion from the User/Library/Containers/com.apple.iPhoto/
Data/Library/Caches/com.apple.iPhoto folder
3 - launch iPhoto and try again.
NOTE 1: If you're moved your library from its default location in your Home/Pictures folder you will have to point iPhoto to its new location when you next open iPhoto by holding down the Option key when launching iPhoto.  You'll also have to reset the iPhoto's various preferences.
NOTE 2:  In Lion and Mountain Lion the Library folder is now invisible. To make it permanently visible enter the following in the Terminal application window: chflags nohidden ~/Library and hit the Enter button - 10.7: Un-hide the User Library folder.
Have you rebooted since this problem occurred?
OT