Q:

Outlook hangs for 20 minutes on startup

I have a user whose Outlook 2007 client goes "not responding" for 20 minutes every time it launches. It's connecting to Exchange 2010, and this is specific to 1 user's laptop.
Here's what I have already tried:

Safe mode - it still hangs in safe mode
SCANOST with a repair, it continued to hang on startup
general Office diagnostic, it said it found & corrected 1 installation issue, but did not help.
Deleted WORD.PIP, a past source of Word related hang...just in case. Also did not help.

Once it gets past the 20 minute period, it behaves normally. Past experience has shown me when an Office app hangs on startup, reinstalling the Office suite does not always fix the problem, but that is my next step.
Laptop OS is Windows 7 64-bit Professional SP1

A:

The first thing I always try when using cached mode is to close Outlook, delete the OST, and restart Outlook.  The OST will be automatically rebuild.  I do this even if SCANOST reports a fix.
If that doesn't solve it I do a lot of what you've already done, but then also I try creating a new Outlook profile for the user and seeing if that solves the issue.

