[squid-users] squid-ldap hepl

I have recently started ldap authentication for squid and I get the
following message

2006/04/20 09:05:00| WARNING: basicauthenticator #41 (FD 139) exited
2006/04/20 09:05:12| WARNING: basicauthenticator #42 (FD 140) exited
2006/04/20 09:05:47| WARNING: basicauthenticator #43 (FD 141) exited
2006/04/20 09:05:57| WARNING: Memory usage at 108 MB
2006/04/20 09:06:08| WARNING: basicauthenticator #44 (FD 142) exited
2006/04/20 09:06:15| WARNING: basicauthenticator #45 (FD 143) exited
2006/04/20 09:06:15| Too few basicauthenticator processes are running
2006/04/20 09:06:15| Starting new helpers
2006/04/20 09:06:15| helperOpenServers: Starting 90 'ldap_auth' processes
free(): invalid pointer 0x504130!

Can someone help me to rectify the error I tried to increase the helper from
20 to 50 and now 90 but still the same message

I have around 900+ users
Received on Wed Apr 19 2006 - 21:53:39 MDT