Restart S80- a small Control panel application providing software sytem reboot (without removing the battey). When run it just asks whether you want to restart the system - all you have to do is to press Yes.
Software reboot is a very useful function in 9210. By default the only way to restart N9210 is to remove and reinsert the battery. When applied frequently, it makes the battery loose and causes problems with both phone and PDA. But here comes Restart, which does the job - much quicker and safer.