onbar error message

Hello! I have an Informix backup configured as an onbar + Legato Networker combination with IDS 9.40 UC3 on Solaris 9 machine. We take dbspace backups every night and continously backup logical logs using log_full.sh script. All works well except one thing: if logical logs start to fill very quick (around 50 logs in 2 minutes) error messages start to appear in bar_act.log: "The logical logs are full. ON-Bar may encounter errors writing to the sysutils database." Weird thing is that logs do back up, which can also be seen from bar_act.log: ... 2004-05-26 04:15:17 29921 29919 Begin backup logical log 9234. 2004-05-26 04:15:18 29976 29974 /usr/informix/bin/onbar_d -b -l 2004-05-26 04:15:18 29921 29919 Completed backup logical log 9234 (Storage Manager copy ID: 1085537717 1085537720). 2004-05-26 04:15:18 29921 29919 Begin backup logical log 9235. 2004-05-26 04:15:18 29976 29974 A log backup is already running. Can't start another. 2004-05-26 04:15:19 29921 29919 The logical logs are full. ON-Bar may encounter errors writing to the sysutils database. 2004-05-26 04:15:19 29921 29919 Completed backup logical log 9235 (Storage Manager copy ID: 1085537718 1085537722). 2004-05-26 04:15:19 29921 29919 Begin backup logical log 9236. ...etc... I thought of increasing the size of logs so they don't fill up so quickly but I'm not sure whether it will solve the problem. At this moment onconfig looks like this: # Logical Log Configuration LOGFILES 256 # Number of logical log files LOGSIZE 512 # Logical log size (Kbytes) The reason why the logs start to fill so quickly is that we have update statistics for tables and procedures run every morning at 04:15. Any ideas? Thanks everyone.