Hello Nick, thanks for your quick response. > I'm suprised that it occurs so often, it is one line in the logfile every 6 - 10 seconds. this box handles 600 - 800 requests per minute, so it occurs in 0.5 - 1 percent of all requests. on the other hand, the error_log should be for real problems, which i should try to work out. struggling through 25 megs of errors per day isn't that funny. jan ------------------------------------------------------------------------ www.php-accelerator.co.uk Home of the free PHP Accelerator To post, send email to phpa@xxxxxxxxxxxxx To unsubscribe, email phpa-request@xxxxxxxxxxxxx with subject unsubscribe