Comment 4 for bug 345548

I'm not sure you're running the latest version of Checkbox (you can check with `dpkg -l | grep checkbox` - it should be 0.7) as the md5 warning in your log was addressed in 0.7. If it's not, can you upgrade and retest?

Also can you check the value of http_proxy (`echo $http_proxy`) - if you're using the Network Proxy application in the System > Preferences menu, then that should be being set. If you've not used that application, how are you setting the system-wide proxy?

If http_proxy is set correctly, then Checkbox should be using it.