Upgrade problem in SmartWare I can't select backup!

I plan on sticking with 1.5 if I don’t get some help on this. The problem I have on one of my PCs is that if I leave Smartware in auto backup mode, it would start to hog my memory so much that I have to  shut down the PC every few hours. I thought I would have to reformat and reinstall windows but I stumbled upon some of my files not backed up before the reinstall so I upgraded to 1.6 and my memory woes were erased. Now I have gone back to 1.5 and don’t have the same problem… yet!!!