Ever wondered why you are having troubles showing usage reports during any of your sessions? No? Well It nearly drove me mad. Whatever I did, no reports would show. Then I RTFM and remembered that the usage is analysed only once a day.
But when will that be?
If you need to know, look into the SharePoint_Config Database and open up TimerRunningJobs. There you will find two jobs of interest Office SharePoint Usage Analytics Processing and Usage Analysis. The one relates to MOSS and the other to WSS analysis processing.
So then I wanted to kick-start the process. Instead of dabbling with the last start date & time I decided to change the time on my vpc server. hahaha. that was funny. Next time I look, all times and dates have shifted by the exact amount of hours that I shifted the clock. Duh.
Now turning the machine off and the next day on again will not do it either. The Timer job will simply wait another cycle before attempting the processing. There is only one reliable answer. leave the VPC running over night. That will do the trick.
You can try to change the date & time of the last start time and recylce the timer service, but I didn't dare do such an incision to my now perfectly configured system.