I know exceedingly well how sensitive people are about their software making connections to the net, and that’s perfectly reasonable.  In Photoshop CS4 & CS5, you can choose Preferences->Plug-Ins, then uncheck “Allow Extensions to Connect to the Internet.” If you’re a system administrator & want more control over how and when Adobe apps can connect, these tech docs may be useful to you:

• Disable CS Live internet access from CS5 applications
• Disable internet access from CS5 Community Help Client
• Disabling Adobe Application Manager automatic updates for CS5 applications