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NIS and Outlook for Mac
(Intel core MacBook Pro, Mac OS X Lion 10.7.2. Microsoft Office for Mac 2011 - which includes Outlook for Mac Version 14.1.3. All software fully updated.)
I maintain contacts and calendar data on my MacBook Pro using Outlook. Microsoft 'Sync Services' is enabled within Outlook which allows real time transfer of this data between Outlook and Apple's Address Book and iCal. When an iPhone is connected to the MacBook Pro the phone's contact and calendar data is automatically synced with Address Book and iCal (using iTunes). It's a somewhat torturous route, I know, but it is the approved Apple/Microsoft method and has worked flawlessly for a year, and most recently worked just two hours before I installed Norton Internet Security 5 for Mac.
After installing NIS I launched what should have been another routine synch between my iPhone and MacBook and guess what - my contacts and calendar data has disappeared. The original data is still there in Outlook but is no longer present in Address Book and iCal and, as the phone syncs with these two apps, I now have a phone with no data.
I'm guessing that NIS is somehow blocking communication between Outlook Sync Services and the Apple contacts and calendar apps.
This is quite a big problem for me as the data on my phone is a key business tool when I'm out of the office. I may be missing something obvious (I hope I am). Please advise.