Problem SCE 2007: All recent computers do not appear in the left grid "all computers"

Hello,

I have a problem in my SCE 2007: All recent computers do not appear in the left grid "all computers", and the machine is only  showed when I create a new group (if I checked the machine in proprieties, the machine appears for check, but don´t show in the grid after I check).

Can anyone help me?


Thanks,

Renan Rivera