I'm with Tim, I will loose half of my garlics and some of the shallots are showing signs and are soft. Last year I didn't get any spring planted onions at all, the lot went rotten. I heaped up loads of clean home made compost onto the 'onion bed' last autumn and planted directly into that. I must say, I think I have had a better harvest this year. Could be the rot took a while to reach the surface so the plants were able to get some good growth before succumbing, or it could be the ground was good, rich and moist so they are stronger and able to resist for longer, or it could just be luck!