Ever seen that? Locks up within about an hour. Pulled it out of the production chassis it was in (3 DSP's, Quad's and Dual T1, only 1 T1 on it), put in our test chassis, no lockups half day. Other two DSP's work just fine no problems. Any ideas of where to start on this before I send it back to 3Com? HiperARC's, NMC's all with latest and greatest, slots otherwise fine with quad card before this changeover today, so don't think I have a "problem slot". Any questions to ask would even be helpful. SMT Scott Trautman 608-240-4638,4637fax Global Dialog Internet www.gdinet.com 2810 Crossroads, STE LL2 Madison WI 53718 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.