In "My Settings & Tools" there is the "Notification Rules" tab.
There we can see several sub-tabs, e.g. IDE notifier (0/1), Jabber notifier (0/1) etc.
Could someone please explain what the numbers in the parenthesis mean? It seems that the number "1" does not represent the maximum...
Documentation does not explain this I think: http://confluence.jetbrains.com/display/TCD7/Subscribing+to+Notifications