Microsoft issued a hotfix for Windows XP Service Pack 3 last week that it says "could resolve" a Windows registry corruption problem associated with third-party security software. The problem was first discovered just over a month ago, and it notably affected users of Symantec's Norton Antivirus suite of products.
Some users who installed XP SP3 reported seeing garbled system entries that cluttered the Windows registry. The corruption in the registry led to problems such as lost Internet and wireless connections, along with uninitiated restarts caused by sporadic registry subkeys.
News Source: ENT News