Yes, I have tried again.
The error message comes up EVERY time I try to use system update to download, but i check network diagnostics and it says everything is fine. Also, I have checked our other mac computers and it works on them just not this one???
Was downloading iTunes 9.0.1 on Safari and then it told me 'A networking error has occurred: timed out (-1001). Make sure you can connect to the Internet, then try again.' But my internet is fine and still working ????