"Not enough quota to process this command"

> Hello,
> I'm running Vista 64 bit Ultimate on my desktop and my notebook and I have
> the following question:
>
> I downloaded the SP1 Installer for Visual Studio, which is quite large
> (442
> MB executable) and wanted to run it on my machines:
>
> - Notebook: no problem
>
> - Desktop: When I wanted to start the program (I chose "run as
> administrator" using right mouse button already), the process is
> immediately
> aborted with the message "not enough quota to process this command". I
> looked
> this up and none of the quota options is activated. But then a strange
> thing
> happened:
> When I disable account administration (not recommended for security
> reasons)
> it works without problems.
>
> What could be the reason for this strange behaviour? (My systems are both
> equipped with 2 GB of RAM and have over 100 GB free disk space left. I did
> not change anything in the system configuration settings after the
> installation.)
>
> Best regards
> Marco