It isn't the program, it is my resources. I have 8 Gigs ram, Intel Core 5. I am running Weather Display, plus the icloud plug in for outlook,plus Mozy,plus the dyndns updater (My IP address changes frequently for some reason, Century Link is doing it) and all the other things I do.
Having it running 24/7 cuts the resources down and my machine slows greatly. So I can't leave it on all the time. Other than that, it is a pretty nifty piece of software . I purchased a second copy for my wife's machine.