I think the problem in is that the application logs are circular. I mean for examp the app1 creates its log under name app1.log and I put this file to the connector. The app logs have a limits of 3 mb so when they reach this size, the file renames to app1.log.1 (app1.log.2, app1.log.3 and so on) and the application opens another log file under the same name app1.log.
OK I will try the upgrade and will inform you for the result.
Thanks!