Leopard Server Software Update: Downloads Getting Stuck

I have an iMac G5 with 2.5 GB of RAM, a 2.1 GHz CPU, and a 300 GB HDD running Leopard Server (10.5.0). While trying to update it to 10.5.1 the download kept getting stuck at, say, 31.1 MB of 110 MB, and I'd have to stop and restart it to get the download going again (re-agreeing to the licence and typing in my password again). Anyone else have this issue?

 

The problem seems to have solved itself, after finally getting the update to download completely and install.