I am getting the following message when I try to update…‘not enough storage space is available to process this command’.
I have just changed from dial-up to Broadband and I believe this could be related.
It’s a very “old” issue…
How much RAM (memory) and free disk space do you have?
Seems that avast is slowly being incompatible with few resources (RAM) computers.
The solution is here: http://forum.avast.com/index.php?topic=45169.msg378259#msg378259
Thanks Tech, downloaded the suggested software, which loaded ok. Once the computer was rebooted, it alows normal updating again. Thanks again. 
You’re welcome. Feel free to come back any time you need help or just to change experiences 8)