I've had a motorola milestone for a while now and every so often I keep getting the message "Phone storage space is low". All my apps, except for those that came with the phone, are installed on the SD card and I don't have that many contacts. I have my phone open in the Wondershare MobileGo and it says that about 171.4mb are used on my phone and I have about 25 mb remaining, is there any way to free up space?