Missing network computer icon at WinXP My Network Places.

I’m using WinXP Pro and it was join to our domain.

This problem happend sometime only, when i goto My Network Places for browsing the network computer, it show the domain group and there, when i double click go inside the group it show nothing, then i have to restart my computer then the browsing will came back.

When the network browsing was missing we still can access the shared by using ip or typing the computer name.

So anyone can provide me some solution ??? It’s bugs from Windows ??