What is the arrows icon in the *notification* bar

I'm not sure what to call the top part of the phone that has the time, number of bars of service and notifications so I'll call it notification bar for now.

Does anyone know what those arrows icon mean? It has showed up 3 times in the past hour but nothing has been received or sent. (I only noticed because my computer screen got all crazy like it does when i rec'd a text/call.) It looks like 2 arrows in the shape of a circle.

U mite notice that those arrows only show up when u update ur address book, either edit or adding a new  contact. Thats because we have MOBILELIFE or wut ever its  called on the fone so u can access all the same info on the internet as wuts on ur fone, ie, contacts. understand??