IBM is quick to criticize others as if its own domicile has been in order, but remember: Those in glass houses ... IBM has been “alerting” InfoWorld this week to developments such as Oracle CEO Larry Ellison laying off more Sun employees than previously thought, and Microsoft allegedly trying to derail IBM by using SCO as a surrogate.But is IBM the paragon of virtue we’re to assume it is if it’s the party pointing fingers at rivals? Perhaps not.[ Cut straight to the key news for technology development and IT management with our once-a-day summary of the top tech news. Subscribe to the InfoWorld Daily newsletter. ] If you recall, IBM drew scorn last year for suggesting that recently dismissed IBM employees in the United States or Canada could move to India or another faraway land and work for a fraction of their former wages. You’re all heart, Big Blue.Also, an employee in IBM’s Applications On Demand unit in 2008 told of turmoil in working for the operation, although IBM later denied a claim of a reported “three strikes” policy affecting workers.With its SCO-Microsoft example, IBM cited Microsoft-backed SCO’s failed attempt to get control over Unix from Novell, an effort that impacted IBM. A judge this week ruled in favor of Novell. As far as Oracle’s layoff practices, IBM also has cut lots of jobs.It might seem like a decent marketing strategy to sling mud at competitors. But a company doing that had better make sure its own house has been in order first.This article, “IBM’s mudslinging recalls its own dirt,” was originally published at InfoWorld.com. Get the first word on what the important tech news really means with the InfoWorld Tech Watch blog. Technology Industry