winflash does carry a higher risk because of the amount of stuff that *could* interfere with a bios flash in windows, dos flash just makes a dos boot disk with the binary file, flash utility and basic disk operating system (DOS), this prevents any "mishaps" by havinga far more cut down operating environment - however, it is a little bit of a pain and floppy disks can be corrupted too...i always flash by floppy through dos with my DFI board now, and it works fine, but I always check the disk with winimage first to check for bad sectors etc.
The win-flash does run through the win-flash program, not a webbrowser, the browser is just to check for the stuff initially. Once the bin file is down the win-flash program runs and does its stuff, away from the browser.
The CAS latency thing I have seen loads, with my memory at 270 2.5-4-4-7 1T I get 6988Mb/s in SANDRA, with 270 2.5-3-3-6 1T (is unstable after about 3 hours of use) I get 7065MB/s...really worth the instability to me? no Bragging rights? maybe (
btw, the 3dmark's look no different with tighter latency, and neither does superpi - so why bother!).
Matt