Scooter produces heaps of 404s on my site as well.
Like mentioned before it seems to chop of urls all the time.
It also seems to 'try' to connect to anything/java
Very strange, as I don't have anything "java" on my site.
I get an email everytime a 404 is produced, and each time I get scootered, I have to crawl through a heap of mails!