2,475 votes151 comments · Generally Available » Client - Windows Desktop · Flag idea as inappropriate… · Admin →Anonymous commented
Solution for the on/off-line desktop notifications: by default it should be turned off but I don't know why this isn't the case for me. As there's is no global option to tune that some people could have the same issue:
right click on contact, and select "Untag for change status alerts”.
You will have to do it for every single of your contacts, but that should work!