Editing xml files with long lines is really slow in vim. What can I do to fix this?

Question

I edit a lot of xml files with vim. The problem is that, because of the long lines, navigation/editing in vim is extremely slow. Is there something I can do (besides turning off

Answer 1

It's caused by long line parsing in vim. I finally found that if I remove following from my .vimrc, the problem solved:

filetype indent plugin on

Note that it doesn't work if you type in :filetype indent plugin off when editing a file with long line.