iRobot Corporation ( IRBT -5.85% ) just navigated another better-than-expected quarter, but investors aren't bowing to their new robot overlords just yet. Shares of iRobot fell 2% in after-hours trading today, after the company announced that revenue increased 6.4% year over year to $148.8 million. Meanwhile, adjusted earnings before interest, taxes, depreciation and amortization climbed 9.9% over the same period to $17.8 million, and net income fell 14% to $7.3 million, or $0.24 per share.