Technical Blegs

1. I am inundated with “Internal Server Error” messages every time I try to post, which keeps resulting in lost posts or double posts. Is there any solution to this?
2. Does anyone know if the new MT-Blacklist makes it possible, as the older version did, to delete multiple spam comments/trackbacks at once?
I always hate it when technical issues like this wind up consuming big chunks of the time I have to deal with the blog.