According to a report that was released by AssetMetrix, a leading provider of on-demand decision support for IT management, more than 75% of corporate Microsoft Windows XP computers do not have Service Pack 2 installed. AssetMetrix Research Labs, the research arm of AssetMetrix, said the results of a study into the level of SP2 penetration in the IT environments of 251 North American corporations, consisting of over 136,000 PCs. The analysis found that only 24% of Windows XP PCs surveyed had upgraded to SP2.