I did try a few files earlier this morning while I was there.
It played every DivX/XviD file I chucked at it, except ones I'd made myself with AutoGK. Still a bit miffed at that.
Got some disks with favourite episodes of Top Gear and stuff on there, but it just won't play them.
If I press triangle I get
TITLE: Top Gear.avi
Updated: 23/4/2007
Size: 701MB
Length: 59'17
Resolution 720x416
Video Codec: DivX(R) 1.5mbps
Audio Codec: MP3 177kbps
so it recognises it OK, but won't play.
All other DivX from internet play fine... either from disk or network.
To the poster above, if you want to play video from a memory card or disk, you either have to put the video files in a folder called VIDEO, or press triangle on the disk to show all files.
I'm most pleased about the networks streaming. A godsend, and of course, all upscaled to 1080p. I just hope in future updates, it'll allow me to play my own files. In the meantime, I'll play around with the settings I use, and disable the MTK/sigma compatibility checkbox, and see if that fixes it.
Typical, my own XviD files play back in both of my DivX DVD players, PCs obviously, and also various friends and families DivX DVD player, no problems, or I'd not have been using these settings for all these years. Damn that was a disappointment this morning
Ah well, as I said, future update hopefully. At least it plays all my other TV series files.
I'll have a go at mkv files later... maybe renaming to .mp4 helps?
I didn't try .wmv yet, but it's not a format I've ever used. I only personally use MPEG2 for DVD and XviD. I do have some of those HD .wmv showcase files here, I'll try some later
V1N.
EDIT: Is there an email address the public can write to with feedback about the PS3? Specifically to do with updates? I'd write to them if I could, but not via one of those horrible, moany forums

like playstation blog.