I have upgraded to 5.0b and had numerous problem - result I have installed reinstalled all of Vegas etc.  
I am getting rendered files using "best" quality that are about 1/2 the size I expect.  1 hour video goes to about 2Gb.  Of course, the quality isn't what I expect either.
Are the default settings silly/strange/stupid etc?  What should I be using for default high quality settings?  Any recommended searches or sites?
Thanks for hte patience.  I have been grinding through the searching of the forums ad nasuem with little luck
CHeers,
Richard