But some users say Microsoft tech support told them it's Symantec's fault. Symantec Corp. said it was Microsoft's code that crippled some PCs after upgrades to Windows XP Service Pack 3 (SP3) emptied Device Manager, deleted network connections, and packed the registry with thousands of bogus entries.
"We finally got to the bottom of this last night," said Dave Cole, Symantec's senior director for product management of its consumer software. "All of these problems are related to the same thing: a Microsoft file that created all the garbage entries [in the registry]."
He also said that some of the same symptoms had been acknowledged by Microsoft when users updated to Windows XP SP2 several years ago; Cole referenced a pair of Microsoft support documents to back up his claim.