Polycom IP300 Problems. I'm going crazy

I have about 5 IP300s, They all hang right after sip.ld is loaded, the screen just fades out and then it freezes. Then if you come back to it in oh lets say a half of a day, it will be booted up. Any clue?

DNS?

I just thought I would let everyone else here know that Polycom ip300 don’t like dhcp from those cheap routers. I put it on a static ip, and it came right up. Thanks for the help guys.

That’s interesting, thanks - I was actually looking at those phones so thats good to know.