bluetooth connectivity

I have a dell XPS M1530 with 64bit Windows 7 Ultimate installed

The problem I am having is this, my bluetooth connectivity keeps cutting out.  Basically it will work for a little while, then stop working until I hit the switch that turns off the bluetooth (and wireless internet  for that matter) and then turn it back on.  This is getting overly irritating and I was wondering if there is anything that can be done to fix it.  I have the most recent drivers for the device I am using (in this case a Logitech MX5500 keyboard), the most recent drivers dell provides, and the quickset installed (because I read that having that installed fixed a similar issue for someone else even though it failed to fix my issue).  Any additional help would be greatly appreciated.  Thanks!