Sorry, did search on forums; can't find adequate solution. Have latest Verizon update (stock) & for past week keep getting this message. Before clearing all caches phone memory about 25MB. Don't have a lot of running services. Just cleared cache yesterday & dumped all text messages. Today happened again. Internet & forum search tells me it's across all droid models. This can't be a mere memory or running application issue (I don't have many running applications). What's up? I cleared caches again (even going into each application's ssetting & checking individual caches, which were all 0. Then phone restarted itself. This version of system sucks.