We have used Landesk 9.0 and it works like a charm. In other core server, It was installed Landesk 9.5 and it worked too. Then, we did a upgrade to Landesk 9.6 (because our database is Oracle) and distribution software stopped working. Only when no user is logged on in the machine that works really well. I've seen the logs but sdclient_taskXXX.log is created only when package runs on the machine.