If you caught one of my earlier diary entries, you'll see I've been toying with old discarded mobile devices which have built-in satellite navigation receivers, looking at ways to turn them into fully-fledged free turn-by-turn Sat-Nav devices, for both driving and OpenStreetMap work.
Well, having found some free, previously-mentioned software, Navigator Free, I encountered a strange issue with a HTC Touch Pro2, where despite having an in-built tilt-sensor, it wouldn't rotate the screen display from portrait to landscape, except when the built-in keyboard was opened or for just one or two particular applications.
Turns out that this device and the Windows 'phone software it shipped with doesn't support the sensor for application rotating as standard.. a fact I didn't account for, assuming that if you shipped a device with a sensor in it, you'd make full use of it...!
I found a way around this, and wanted to pass it on as it'll work for this and a wide-range of similar devices; download and install the free "G-Config" application (aka BsB_G-Config.cab) to the phone, and you can have it "learn" the applications you wish to display in landscape when the device is rotated, solving the problem in a stroke.
See http://www.xda-developers.com/, specifically this forum post; http://forum.xda-developers.com/showthread.php?t=487991 to download the application.
Took me minutes to "fix" once I'd found this, and hope it might be of some use to other OpenStreetMap editors using similar devices.