I have been using versions .73 and the original .56 (the plain Jane skin is perfect;looks like a normal app at work!) and limiting my Outgoing Conns. to 4. I have never had a problem with the program bogging down. At what point does hardware become a factor? I run a P350 at work and P133/P233's at home, no problems anywhere. I am contemplating upgrading the software, but after reading about all these issues, I may keep .73 handy in case the new version introduces too many ill side effects.