Some Garmin Nuvi's going nuts today

[Boyd]

From what I've read, this only affects the Nuvi 7x5 series (755, 765, 785, etc), but there are a lot of upset owners out there...

http://www.engadget.com/2009/06/23/garmin-7x5-series-devices-bricked-by-firmware-update/

Things are still a little early with this one, but a sizable number of reports have cropped up today indicating that there's some seriously wrong with Garmin's 7x5 series GPS units, with a firmware update seemingly the likely culprit. Interestingly, it doesn't look like the firmware update instantly bricked the units when it was installed, but rather caused them all to suddenly seize up at some point on June 22nd. While it's not saying anything official just yet, a number of folks that have spoken with Garmin's customer support say that the company is aware of the problem now that the calls are pouring in, although it's unfortunately not offering much in the way of solutions to the problem just yet (though at least a few customers seem to have been offered a replacement unit)

See the discussion here: http://forums.gpsreview.net/viewtopic.php?t=13897