I've had some weird issue that the night that Daylight Savings occurred, the DNS-323 (on 1.08) did not update its time (just like all of you). But the following morning, when I tried to stream video from it to my PS3, the PS3 locked up. Now it can't stream video without my PS3 locking up when I try to do so from browsing through folders on PS3 (it still works if I stream a video from the "Show All Videos" option).
The only thing that changed between Saturday night (3/13) when it was working, and Sunday morning (3/14) when it began freezing, was Daylight Savings. I also had put in Uncharted 2 for the first time, and it updated the title to 1.06, so I erased the title update, and rebuilt the Hard Drive Database and File System (via the PS3 service menu), and it didn't change anything.