Minor - P4 MongoDB shell version: 1.4.2 url: test connecting to: test type "help" for help > use foo/bar switched to db foo/bar > db.foo.save({bar:1}) file allocation failure
That puts the server in a state where all new databases gives 'file allocation failure':
> use test
switched to db test
> db.foo.save({bar:1})
> use foo
switched to db foo
> db.foo.save({bar:1})
file allocation failure