tangor - 2:41 am on Aug 18, 2011 (gmt 0)
Theoretically there should be no mysteries in robots.txt... THEORETICALLY... but I've found that if you want results, you ask for or define the results desired.
In my robots.txt I have the (less than a half-dozen) bots allowed listed first and a deny to all others last. Has worked for the last 8 years. Above (per your specification) you have a denial first and all others allowed last. Please, most seriously, let us know how this works!