20 hours is way too long. Go ahead and open a support ticket here.
Click Submit a Technical Support Ticket.
In order to receive technical support, you will need to be current on your SolarWinds maintenance. Complete the form. You will not be able to upload your diagnostics, but you will receive an email back that allows you to upload diagnostics.
I have the case 162179 since 5/18/2010 and my NPM is still down and with a lot of issues :(