Hi, im having a problem with mobile device messaging system/windows live and wondering if someone may be able to help?

I usually sit as appear offline and when someone messages me i get this box that pops up that says you have recieved messages while offline. well as of last night every message i got while i was appear offline came to my cell phone. I do have mobile messaging activated and always have but in order for them to message my phone you had to go to "send message to mobile device" or something like that.

Wondering what may be causing all my offline message to go to my phone now and how I can get it back to popping up a message window thats says I have got messages while offline again??

The only things i have recently changed are I disabled the option of display notification when contacts sign in and disabled play sound when contact signs in.

T.I.A for any help anyone can give me on this.