I would submit, that 'he's not a reliable source', being something that could well be backed up by facts and used as a predictor of probable veracity, would not be an ad hominem arguement, even. And in this case, you could fairly easily back that up with some of the things he's said. To get into true ad hominem territory, you'd have to get into politcs or percieved intelligence or anything less relevant, really.

With good but not great hardware, I more than saturate gigabit on my 8-drive setup using ZFS on Linux. ZFS-FUSE would putter about at 20-40 MB/sec but this version zips right along. Saturates the gig link, scrubs at 450MB/sec... Good enough to keep me happy anyway.

...was that it must be an old RCA plant and it's annoying to see it go.

Humor value noted, but for those wondering, he's talking about Extended Attributes, the big database of stuff about files, stored on HPFS. Kind of like a Resource Fork on a Mac file. EA corruption was one of the more annoying things you'd have to deal with on an OS/2 system. Examples of EA data would include the file's icon, data type (which would refer back to which program to open it), etc. Without it, a lot of the system would get really unhappy. There was even a hack IBM came up with to let you have EAs on FAT volumes, but that was a little less nice.

It's actually a very nice SACD player, using the Cell to decode the DSD streams into high-rate PCM. I have a 'real' SACD player and end up using the PS3 most of the time...

RCA was also bizarrely good at dropping the ball on technologies they had. RCA's Lancaster, PA plant made picture and TV camera tubes. My dad told me they had engineers come to the local ham radio club in the 70's and show off this tiny (for the time) CCD-based video camera they'd come up with, showing how it could take pictures by candlelight. If they'd commercialized that quickly, they could have extended their dominance of the TV station camera market into the 80's. The same plant was also home to the research group that commercialized the heat pipe concept, which was discarded by them, then bought out by the engineers involved and turned into a company that's still going today. They even had a very workable VCR prototype in the early-mid 70's that they dropped as 'too expensive' rather than try to develop into something affordable. That decision alone, if they'd controlled the US videotape format, could've let us have RCA around as a real company today.

In '97ish I was maintaining a system that ran an inventory database on a Pick emulator running on top of AIX. Boy that was interesting. Took a lot of the neat 'database OS' idea out of it though.