I've used IPC 2.1.3 a couple times with no issues. In general I use Skype as it works great almost everywhere!
Only 64-bit problems I'm having are with Cisco VPN Client.
In general Cisco has been slow with 64-bit drivers.
Getting Started
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: