I have sent emails and calls into MacroVision(company that bought Mediabolic, maker of the media server), DLNA.org, and of course Buffalo. Next one will probably be the BBB, although seems Buffalo blows them off also.
4 calls into support. Here's their story and they like to stick to it. I wish I was making this up.
1st "it's Sony's fault, always is"
2nd "yeah it's too bad, we know it's broke, but I'm not allowed to get information to or from engineering".
3rd. "As long as the PS3 sees the Linkstation, it's working, it's the PS3s fault that it can't see the files."
4th. "Send an email to info@buffalotech.com and wait for new firmware update, hopefully they'll make one" seems like odd email address for support group(blew me off?). btw, did that, no response.
BTW Along with Nullriver's MediaLink running on my Mac, I also tried Twonky on my Mac and it also turns my Mac into a funtional DLNA media server that the PS3 has no problems with. Both work like a charm. Would love to try Twonky on the Linkstation, but of course can't telnet into it to get it installed. For you kids out there though, don't try that at home even if you could, you will void your "warranty".
As elz64 mentioned, therapy session over for me today.