As reported by ComputerWorld:
Seagate's use of the decimal definition of the storage capacity term "gigabyte" (GB) whereby 1GB equals 1 billion bytes, was misleading to consumers because computer operating systems instead report hard drive capacity using a binary definition of GB, whereby 1GB equals 1, 073, 741, 824 bytes -- a difference of approximately 7% from Seagate's figures.
In court papers, Seagate said between March 22, 2001, and March 31, 2007, the disk drive maker sold approximately 6.2 million retail hard drives in the U.S.
Once the settlement is approved, anyone who bought a Seagate brand hard disk drive between March 22, 2001, and Dec. 31, 2006, has the right to submit a mail in claim form for cash or software from Seagate by March 10, 2008, according to court documents.
Mail In Claim Form (click here)
Don't forget this if you upgraded your hard drive in your Mac or Apple laptop. Also don't forget about external enclosures. Many hard drive enclosures have Seagate hard drives inside them. If they are easy to take apart - it's worth the quick check up.
Don't forget that MANY Apple computers come with Seagate hard drives in them. My MacBook Black has a Segate Scorpio 7200RPM drive in it and originally came with a Seagate Momentus Drive. These drives SHOULD qualify as well even though OEM.
Furthermore ... Apple users are forced to take the cash benefit. The settlement offers two solutions; 1) A Software benefit* that is PC only and a 2) Cash benefit. You will be better off taking the cash even if there was software being offered that was Mac compatible.