Is there still sufficient reason for hw.ata.atapi_dma being 0 by default?

[Maxim Sobolev]

Since high-speed CD-RW/DVD-RW recorders (32x - 52x) are commodity now 
IMO it makes sense to review hw.ata.atapi_dma default of 0, since 
apparently PIO mode can't support necessary sustained data transfer 
rates anymore. For example I had had problems burning RWs on 16-24x with 
several drives in PIO mode, which gone when I've switched to DMA.

I easily imagine newbies who make a conclusion that "FreeBSD sucks" 
after installing FreeBSD and finding that they can't burn CDs, while 
other operating system do it without any problems.

-Maxim