LimeWire contains absolutely no bundled software. As far as I know, "Grokster" is a competing P2P program. We certainly do not include that. I wrote LimeWire.exe myself, so I can say with confidence that it has no spyware inside it.

If Microsoft's AntiSpyware is reporting there is something bundled with LimeWire then Microsoft's AntiSpyware is wrong. It wouldn't be the first time Microsoft was wrong, and it probably won't be the last.