This is really a top annoying problem, the constant prompt for credentials each time you open a report. All you need to do is disable the Internet Explorer Enhanced security on the reporting server. This is done by running Add/Remove programs, Add/Remove Windows Components. In Windows 2008 you will find the setting in Computer Management, [...]

The MMC 3.0 might not be the fastest console in the world so here are a few little tricks that might speed up the performance.

Open Internet Explorer, select Internet Options and the Advanced tab.
Remove the check mark from Check for publisher’s certificate revocation.
 

Another trick that might boost the performance when working with snap-ins [...]