Importing from .rss freezes

Hi. I’ve tried importing a .rss-file to a wp blog.
The RSS is from an open swedish blog-site called blogg.se.
It doesn’t work though. After choosing the downloaded .rss from the harddrive and clicking on import/upload (or whatever it says), the site loads for a while and then turns blank with this URL: wp-admin/admin.php?import=rss&step=1

Then, checking the blog, I can see that some headlines have found their way into the wp blog. But no text and no comments. The first time I tried it returned some 25 or so new (old) headlines. But the second time only four…

I probably have to check with blogg.se and see if they could export my database, but I doubt they have that service.