Segfault debian server

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http://serverfault.com – we move our retail software to a new hardware (we passed from an ibm x3200 with sata 7200rpm disks to an ibm x3200 with sas 15000rpm disks) but after a few days with no problem at all we keep getting Aug 29 08:39:50 server01 kernel: [64680.439253] retail-soft[1089]: segfault at 104 ip ? 081106ea sp bfd1b7c0 error 4 in retail-soft[8048000+18b000] in /var/log/messages and the software just hangs or gets closed. We change the RAM assuming that was the problem but it keeps happening. What else can we check? Sorry about my english. Thank You (HowTos)