Do you have any other software that plugs into Acrobat? YOu can try turning it off in the Preferences and see if that helps.
Only Java scripting and that does not help.
I am having the exact same issue... it's so frustrating! Does anyone have a solution to this?
Running CS4 on a Core i7 workstation w/ Win 7 64-bit, latest BIOS and video card drivers (ATI Radeon 4890). Acrobat is version 9.3 with all updates. It freezes for 30 seconds just as described, every single time you launch it.
All my drivers are up to date. This does not help the issue.
I know many people who have this issue. Sadly it seems that Adobe is not addressing it.
Acrobat will work for the first number of times you open it after a reboot, but that is it. The rest of the time it pauses. This leads me to believe it is some sort of cache or temporary file issue with Acrobat. I have deleted all Acrobat temp files but that does nothing.
Is your workstation on a network/domain?
Check your default printer driver is not set to a printer that is unreachable.
I had a similar problem with Photoshop when I had inadvertently changed my default driver to a network printer that was not longer available