strage error in PR-9300

[Vamvakopoulos Manolis]

Dear admins and users

recent I spot a strange behavior on
a pr-9300 modular sw

which consist from
one J4485A mgnt module

and 13 J4895A EP 16-port 100/1000-T Module,

system spontaneous disable one slot J4895A module

when we try to put the module back
( module enable 7 ... command)
we see in the log
-------------------------------------------
56d20h38m05s:N:Module was removed from slot 7
56d20h38m04s:A:Module 7 disabled by system
56d20h38m04s:A:Module 7 (CAM MASK 0002) CAM size error
56d20h38m04s:N:Module was inserted to slot 7
---------------------------------------------
does anyone know something about this
undocumented error ?

thank you very much in advance
best
e.v.

p.s.

some further infomation about the pr-9300 sw

SW: Version 07.8.00aT53 Hewlett-Packard Company
Compiled on Oct 04 2004 at 21:29:05 labeled as H2R07800a
(3638354 bytes) from Primary h2r07800a.bin
J4874A HP ProCurve Routing Switch 9315M
HW: ProCurve HP9315 Routing Switch, V2(0301), SYSIF version 21, Serial #: 0006023101
==========================================================================
SL 1: J4885A EP 8 port mini-GBIC Management Module, SYSIF 2 (Mini GBIC), M4, ACTIVE
Serial #: US06022325
4096 KB BRAM, JetCore ASIC IGC version 49, BIA version 8a
32768 KB PRAM and 2M-Bit*1 CAM for IGC 0, version 0449
32768 KB PRAM(0K+0K) and shared CAM entries for DMA 1, version 0449
==========================================================================
SL 2: J4895A EP 16-port 100/1000-T Module, SYSIF 2
Serial #: US06021965
4096 KB BRAM, JetCore ASIC IGC version 49, BIA version 8a
32768 KB PRAM and 2M-Bit*1 CAM for IGC 4, version 0449
32768 KB PRAM and 2M-Bit*1 CAM for IGC 5, version 0449
32768 KB PRAM and 2M-Bit*1 CAM for IGC 6, version 0449
32768 KB PRAM and 2M-Bit*1 CAM for IGC 7, version 0449
==========================================================================
... same from other modules ...