Quick follow up,
Starting as of yesterday, each midnight, London time, gridcoins.org get's new snapshot of blockchain and published and available for download at the status page: https://gridcoins.org/status.php
This aims to provide quick sync ability, and will automatically get grayed out if, at the moment of creation, the number of blocks differs from the last known block of https://gridcoinstats.eu/status.php (That we are using to compare is we are in sync or on the fork). Therefore, I suggest downloading from status page, rather then through direct Link.
For development, a direct download link is the following: https://www.gridcoins.org/snapshot.zip
Don'g get confused with "backup - not implemented yet" as this will get's replaced with last backup time as soon as we confirm everything works correctly.
Best Regards,
S.