Apple has been hit with a patent infringement lawsuit relating to the fast booting mechanism built into Mac OS X.
This patent, currently owned by a Florida-based company calling itself Operating Systems Solutions, LCC, was once owned by LG Electronics back in 1999.
According to the lawsuit, here's where OS X violates the patent:
"A method for fast booting a computer system, comprising the steps of: A. performing a power on self test (POST) of basic input output system (BIOS) when the system is powered on or reset is requested; B. checking whether a boot configuration information including a system booting state which was created while executing a previous normal booting process exists or not; C. storing the boot configuration information from execution of the POST operation before loading a graphic interface (GUI) program, based on the checking result; and D. loading the graphic user interface (GUI) program."
Seems like a pretty basic patent ... which is the problem with many of these software patents.