Hi Marcelo,
I would request you to upgrade the firmware to at least 10-2-2-16, the latest is 10-3-1.
You may find the firmware here
https://software.cisco.com/download/release.html?mdfid=286255329&flowid=54176&softwareid=282074288&release=10.2%282%29&relind=AVAILABLE&rellifecycle=&reltype=latest
HTH