MAX TNT resets

Hello All,
This may or may not be an Asterisk issue, but I am sure there are lot of MAX TNT experts that may be able to help me. So here goes:

I bought a MAX TNT (11.0.2) off ebay about a month ago. It has a 8T1 card, Ethernet card and 96DSP card in addition to the shelf controller. I am using it as a media gateway for asterisk.

Current configuration is 2PRIs<->MAX<-ASTERISK->Phones(Polycom and SJPhone). Only codec I am using is G711.

Everything is working fine. However, I am seeing daily resets of TNT (Not Asterisk). The seller of TNT sent a replacement shelf controller thinking that it was becuase of memory problems. However, resets are still happening. The fatal-history looks like this:

[code]SYSTEM IS UP: Index: 100 Revision: 11.0.2 Shelf 1 (tntsr)
Date: 12/13/2005. Time: 10:03:09

   WARNING:  Index: 179  Revision: 11.0.2  Shelf 1 (tntsr)
    Date: 12/13/2005.       Time: 15:05:55
    Location: 1032c2d4 1032c3b4 1032bd64 10328a94 10333688 102e0154


   WARNING:  Index: 179  Revision: 11.0.2  Shelf 1 (tntsr)
    Date: 12/13/2005.       Time: 15:29:50
    Location: 1032c2d4 1032c3b4 1032bd64 10328a94 10333688 102e0154

FATAL ERROR: Index: 40 Revision: 11.0.2
Shelf 1 (tntsr)
Date: 12/13/2005. Time: 15:42:31
Location: 100e12c4 1001bb88 1031021c 10310aa4 1030971c 10311f80

SYSTEM IS UP: Index: 100 Revision: 11.0.2 Shelf 1 (tntsr)
Date: 12/13/2005. Time: 15:45:22[/code]

There is nothing in the debug log indicating anything abnormal before these happen. Both 40 and 179 are vauge in the manual (Protection error and un-specified error).

Did any one else run in to this kind of problems with MAX TNT?

Any help you can provide is much appreciated.

Thanks in advance.

SV