I had the same problem with my Word 2007. I figured out what was causing the
hangup by disabling all the startup programs in msconfig. That can by done
by going into the start menu, and clicking on run, then typing in: msconfig.
Click on the startup tab, and uncheck all the boxes. You will need to
reboot. After you reboot, try your MS word. If it loads faster than before,
that's a good thing. Now, go back into the msconfig, and turn on a startup
program, then reboot again. After you reboot, you should try opening a
document. If it is still opening at the normal, faster speed, add another
item to the startup tab in msconfig. Repeat this as necessary until you find
the program causing the hang up. On my system, it was my cell phone
syncronization/connectivity software. I simply disabled it on windows
startup, and the problem is resolved. When ever I load my phone software, it
hinders the performance of MS word. Word won't start performing normally
again, until I reboot.
Hope this helps clear things up.