WPT private instance not working for FF or Chrome

[meng.fu]

I've set debug=1 in the wptdriver.ini file but don't notice any extra logging.
Where would I expect these debug messages?

Also checking the WPT log, can you provide a breakdown of what field represents? I am curious about the last 2 integer values before the hashed string token. First request (URLBlast) works... second request queues and doesn't do anything (WPTDriver).

2013-05-01 12:58:55 10.X.X.X 0 0 130501_NE_c591005101cf818def049a724b9bcd8f http://www.somesite.com Local - IE 9 - <b>DSL</b> 1 0 Sched Job 0c74693275314d9cdfe7ed3d6c7bcfa318ebb9eb
2013-05-01 13:05:12 10.X.X.X 0 0 130501_R0_61 http://www.somesite.com Local - Agents - <b>Firefox</b> - <b>Cable</b> 0 0 c2ef4f1a4949bcd795262f57da23662938841c46

Thanks