Can you spot any pattern to what makes it crash out? Is there anything in particular you're playing at the time (shoutcast, mp3, ogg etc.)? Or is it completely random.

As you're on linux, try the following:

1. rename /tftpboot/10.0.0.90/sbin/no-test to test

2. power up the receiver. this should get no further than "Found music server"

3. wait 30 seconds or so and then "netcat 10.0.0.90 5001". you should find yourself in a very basic shell in the sbin directory - type "ls" to confirm

4. type "riot" to run the client and let me know what it says when it crashes

Cheers
Paul