I can confirm error 52 with a bad http 404.

on the other hand my DL queue remained ok. I had to clear the queue by manually editing the .net file to stop the error from appearing when I restarted. so be glad you lost the queue. it seems gnotella does not like a host disappearing once queued for DL.

I had did a stop and restart with a full queue. then the http error occured. i believe this is why my queue remained intact. it has already been bug reported that gnotella does not save all info until it has been properly stopped. I guess this includes queue info too.