I am importing UBB.Classic data (6.7.2) to an empty UBB.Threads board (6.5). As the import has progressed it has become slower and slower. Now to the point of stopping all together.

It has inserted 74,000 rows into the ImportPosts table. It is working on file #68 out of 220 post files and it now stalls every time. Even when I resume the importing process. Is there a way to speed it up and/or prevent it from stalling?

Thanks.