The 3 LRs study (30,11,3) of the weekly and monthly bars is pretty dismal looking with no apparent relief in site. Below are a few articles which suggest there's more of the same to come.
Finally, for those who want to learn a little more about the 3 linear regression study, I suggest Richard Muehlberg's "Reaping Profits with Regression Analysis" in the June FUTURES magazine (www.futuresmag.com). Richard is a real trader, a genuinely nice guy with his own unique daytrading site. It's a fee site, but a free trial is available.