Squid crashes, restart

[Augusto Casagrande <augustocasagrande@xxxxxxxxx>]

Hi, today i noticed that squid restart from normal operations.
Here is the log
---
squid[4374]: assertion failed: ACLProxyAuth.cc:227:
"authenticateUserAuthenticated(checklist->auth_user_request)"
---
I'm running SUSE 10.1 and Squid Cache Version 3.0.STABLE19

Any suggestion?

Thanks!