On my PC the chestnut makes everything get narrow.

There was a similar conversation on on of the forums here (can't remember where now) and someone pointed out that the type of browser you use (IE, firefox, the Mac browser, etc...) is what causes the Chestnut to widen for some people and narrow for other people.

I think there was also mention of changing something in your browser options or in your PC options to make the narrow/wide problem better.... But I of course forget the details