You no longer need to use Google Sync for your Google Cal on a Blackberry.
On the Torch go to Email Setup and choose 'Setup another email account'.
From there you can add your [email protected] account. Once you have your Gmail account added, select it (still in email account settings) and go to 'Syncronization Options' and check Calendar.
Note that the same can be done online if you have setup a BIS account via your mobile phone service provider.
So I uninstalled Google Sync and also Google gMail for my Torch. The duplicate entries have decreased however they are still present (No longer 6 plus duplicates). This is after cleaning up both my Google calendar and BB calendar.
No my BB is duplicating contact entries. This is getting really frustrating!