Same here - I guess they want to see if the some of the problems they had when all 8000 testers were active have now been solved. Hope the quality is back to what it was in the earlier stages of the test- then I will certainly look at supporting their commercial launch.
Mine was actually running better later on.
Download speeds were great and my ping in online gaming was better than with my cybersmart account.
Thanks for the 1gb top up WA