I was in need to log into a Mac Pro that ended up in one of the Server Rooms that IBM took over in our building.
I basically needed to connect a keyboard, log in and enable remote desktop so I could run a few XCode builds (I don't have a Mac, and I needed to test a few hybrid Sencha/Phonegap apps)
after several phone calls involving my boss and his boss, three meetings with five IBMers and 3 months (I kid you not) we gave up, and ended up borrowing a few personal MacBooks from friends to test the apps.
The Server Room was a few meters from the conference room, it was a 2 minute job, but we could not enter and do the changes ourselves without IBMs permission.
The word frustration doesn't even cover it.
(oh, and the 'copy jar files' thing? totally true.)