I think I am right in saying that the Lincs to the Past website is hosted by the Lincolnshire County Council computer and judging by the size and complexity of their website they would need to carry out any essential maintenance at weekends.
I, like others, have said in the past that those whose major research centers on Lincolnshire are fortunate to have access at our finger tips to a wealth of free Information available through LTTP and I agree with Larkspur we just have to be patient when it goes down.
Alan