The PC World Test Center staff have discovered two bugs involving Windows XP's Service Pack 2. One can reduce the write speed of many dual-layer DVD drives. The other can decrease the battery life on some Acer laptops by an hour.
Staffers were testing dual-layer DVD drives when they found that InCD4 DVD-burning software, by Nero AG (formerly Ahead Software AG), performed up to 40 percent slower than competing applications (such as Roxio Inc.'s Drag-to-Disc) on systems running SP2. InCD4 ships with many drives, including those from Lite-On Technology, Plextor, and Sony.
Nero developers say that the glitch is due to a cache problem in SP2 and affects InCD prior to release 4.3.7.3. To check your version, open the program and select About. If your app is affected, get the InCD Update-Package 3. The fix bypasses SP2's cache management problem.
Microsoft is working on a hotfix that wasn't yet available at press time.

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