Systems locks when DL SnowLep 10.6.8 then wants 10.6.7

I got my hackingtosh up & running (it's a Mac Pro 3.1 per OSx) so I decided to upgrade from Snow Leopard 10.6.3 Retail to 10.6.8 Combined, then 10.6.8 Supplement. Well, I tried several times to DL 10.6.8 Combined but after about 25% of the data is downloaded the system freezes completely. No keyboard, no mouse, no nothing, just what could be best described as a screenshot of the download progress. So, I went to another computer, signed into my mu Apple account, searched and found SL 10.6.8...

Systems locks when DL SnowLep 10.6.8 then wants 10.6.7