[hijinks]

I was an early user of the mac beta and the 100% cpu would happen 2-3 times daily. Now it maybe happens once every 2 weeks.

Not sure about the others but the CPU isn't much an issue anymore. Maybe its just me being use to how bad it was.

[010a]

I've been heavily using it since what must have been early closed beta, and cannot recall ever having this issue. Might be something that isn't quite so widespread.

[DigitalJack]

It's about weekly for me on mac.

[justincormack]

It only happens with a few users, and not at all to the majority. It seems to happen more on older OSX versions, but beyond that there has not been anything identifiable in common about the systems it happens on unfortunately.