Two reasons: (1) The profile dirserviceprovider needs locking when used without profile mgr. (2) The cache needs to lock its directory when its directory is not within the profile dir. As far as module dependencies, we don't want cache to depend on profile. I'd like to divide the profile stuff into "profiledir" and "profilemgr" The first would be just for things which use profile-relative data and the 2nd would be for all the other profile manager stuff. BTW, I've already done this on a branch for profile sharing - it just needs to be brought to the trunk.

This bug is filed in a bugzilla component related to pre-Firefox code which no longer exists. I believe it is no longer relevant and I am therefore closing it INCOMPLETE. If you believe that this bug is still valid and needs to be fixed, please reopen it and move it to the Toolkit:Startup and Profile System product/component.