I've re-installed my desktop system and hit a problem...
When I "reload" in synaptic, I get an error message of
"Could not download all repository indexes
The repository might be no longer available or could not be contacted because of network problems. If available an older version of the failed index will be used. Otherwise the repository will be ignored. Check your network connection and the correct writing of the repository address in the preferences."
I tried checking all the repositary boxes, this did result in many updates downloading, but my system then would not boot at all. I've reinstalled again but still got the same problem with synaptic. But confused, as I've installed from this

live CD before with no problems ?