I have a customer with a 7030 running 4.53 software. The customer sates that it randomly restarts, during the day. I called DSamsung and they said to put a UPS on it (the site gets hit by lightning regularly) and to disconnect the 7030 from the LAN, the reboots could be cuased by a IP conflict. None of this worked, neither has dumping the config, and reloading the database back on, or programming from scratch, this thing may have been fried by a lightning strike, any ideas?

Our house one did the same. In addition to random restarts it would also freeze with the phones with the boot up screen V4.2 or whatever on the screen. Had to send ours in for repair. It came back 'no trouble found' and it died overnight the first day so we sent it back.

Replace the PSU.
Seen this a couple of times on the OS7030's