Casper73,
Your log file goes back to April 16. You might be able to make the log a little easier to look through if you do the following:
1. On your client stop the "Symantec Ghost Client Agent" service
2. Rename the ngctw32.log file to ngctw32.log.old
3. Restart the service you shut down in step 1
4. Run the Inventory task from your console and let it run for about 10 minutes (or to failure, whichever is first)
5. Now your ngctw32.log file will be just of that time frame if you copy and attach it right after the task is complete