Interesting read on IDC un-prediction in today's El Reg:
"As the artist's rendering points out, IDC does not have a sparkling track record where Itanium sales prediction are concerned. In fact, its 2004 prediction was 1,900 per cent above the actual sales mark. Some analyst firms can survive on results like that, and some can't."
"IDC never explores these issues. Instead, it relies on flaky data and embarrassing conclusions to create a study that could outdo its 2004 effort - a feat we thought impossible."
WOW, this seems to be a hard one to get away from...