seccheck Problems on SuSE 8.1

Hi, I'm using a SuSE 8.1 Server. Via cron seccheck is running everyday/week and month. Only seccheck weekly makes trouble. When seccheck weekly is running the server is working for some time but crashes suddenly. No access via ssh, http etc. Even ping doesn't work. No entry in /v/l/messages or /v/l/warn. Any hint? Thanks for help Andreas