When I subscribe to a thread, I get a few emails, and then auto-unsubscribed from the thread. Is this normal? It wasn't like this before, its rather annoying actually. How can I stop it?

I dont get mails. Report to moderator.

The administrator, and some moderators have the ability to "Unsubscribe all users from threads".

This is done to lessen the load on the server to a safer level for system maintanence, and mysql maintanence etc.

This might have been done.