This is what I found on the net:
A class action lawsuit has been filed in the Los Angeles Superior Court on behalf of all purchasers of computers and other electronic devices, such as PDAs, USB drives, and MP3 players, that include hard drive storage components.
The complaint alleges that Defendants have misrepresented to the public the hard drive capacity of their electronic and computer products by choosing to use numerical notation inconsistent with that used in the rest of the computer industry, i.e., the operating systems pre-installed on those very same products that determine true hard drive capacity. This use of an inconsistent numerical notation has resulted in advertised hard drive capacities being inflated by approximately 7% in current generation products, and has caused harm and confusion among consumers of these products. For example, a computer advertised as having an "80 GB" (Gigabyte) hard drive, when booted into the Windows XP operating system, will show a hard drive capacity of approximately 74.4 GB due to the inflated numerical notation used by Defendants in their definition of "gigabyte." This difference of approximately 5.6 GB represents the inability to store thousands of pictures, music files, and documents, which a consumer reasonably expected to have available when purchasing such electronic or computer product.
The complaint seeks to enjoin the further use of this misleading practice and to recover damages on behalf of all those who purchased class members for their damages.