If I try to attach a 13.8mb tarball to a page describing how to deploy that tarball, it tells me the following error:

• java.io.IOException: Content Length Error (14522119 > 10485760)

It would be mighty useful if you could set the maximum size in the administration area, perhaps even per space.

The abillity to turn off attachments (possibly by setting a 0 max size) or limit them to certain extensions / mime types (eg: images) would be useful for spaces that have no need for attachments other than images (or not even that).