I installed the 1/31/10 nightly build on top of the Alpha R1 release. I can read from 4 GB Sandisk USB drive but I cannot write to it. It is mounted read/write. When I copy using cp file /SANDISK it sits and does not complete. I notice that the USB light blinks randomly. When I pull the disk out I get a kernel panic.
I do not think this is a known problem -not that I know of anyway- so you should create a ticket on http://dev.haiku-os.org/ with all the details you can give.
I’m not sure… Did you get and reply to the activation mail after registering? I have no idea, maybe you can log in without activation, but can’t add a new ticket…?
Maybe try IRC. mmadia should be able to help you, I think.