I have the same problem.
That's why I still cannot decide when to upgrade from 6.5.4 to 7.0.2.
I have :
Total topics: 84897
Total posts: 851749
On my test server , the importer script has already run 20+ hours.
And the importer script is running more and more slowly. It is processing 64???th topic now.
I estimate that it'll take the whole two days to finish "topic" import. Not including PM's import , that may be another two or three days ...
My question : Why is the script running more and more slowly ?
At first , it processes 20 topics like fly , but later , it's like a snail... and my HD read/write more and more constantly.
I can't shut down my website for 4 or 5 days to upgrade . Is there any better solution ?
How about the ubb6's db and ubb7's db on different servers , will it help ?
