shez - 6:48 am on Feb 10, 2007 (gmt 0)
For some of my keywords i dont get any Ad (blank space)mostly and sometimes only network ads.
but they have improved in a way that now in 2 different Ad unit at least i can see different Ads.
as far as stats concerns, i created reposrting categories which display results earlier than normal over all report. i.e 12-24 Hours behind.