Hey, we've got a joke for you: what do you call a phone with a display that just goes blank without warning? A Nokia 5610! Get it? Okay, so that's not a joke -- it's totally happening to some T-Mobile customers right now, and sales of the XpressMusic slider have been temporarily halted so Nokia can figure out what the heck is going on. It's important to note here that the phones aren't being recalled, they're just not being sold anymore; if you currently have a 5610 and you're not, you know, seeing anything on the display, you're encouraged to get in touch with customer care to "discuss available options."