I have had the MagicJack for a year now and the only problem has been a couple of upgrades that should have been automatic and yet they had to be completed manually.  We dropped our landline and use this and our cell phones, when the pc is not on magicjack calls are forwarded to our cells.   My advice is this;  if you are not at least a little computer savy ( my dear hubby!), leave it alone for now because it is a fairly new product and to keep it working correctly does take a small amount of manual upgrades and trouble shooting. However for me it is great to only pay $20 a year for phone service anywhere in the US or Canada, and there are no limits on usage or location as long as you can receive a high speed internet signal.  I also want to say that the "live help" employees have apparently received better job training in the last few months because when I first bought our magicjack they were pretty much useless!!

 We've had some issues with the MJ, and have stopped using it.  Does anyone use it with Windows Vista?  I wondered if it might be a compatibility issue.  The phone calls sound very distance and sometimes break up.  We have done all we can figure out to do.