No Perl content here... but a hard-won workaround to an annoying problem.
I was trying to install InDesign CS3. After hours of beating my head against the wall, I realized (1) Adobe CS3 was not specced for Vista Home Basic, (2) my machine ran Vista Home Basic, (3) upgrading Vista would put money into Microsoft's pocket needlessly and (4) temporarily disabling Vista's UAC controls would enable InDesign to install.
For a less sanguine, real-time rant, you can read my remarks on John Nack's blog.