nearly 3 years ago and have never had one stitch of trouble from 4.12.6 and then I did some firmware upgrades and a couple other new installs. Limewire worked fine until I had a Quicktime problem and had to re-install all system software. When I re-installed Limewire it no longer worked at all. On my first computer I never had to fool with the Linksys router as the uPnP was working fine. Now the original computer will not connect as well as the new iMac. Tried to work it through the router, "0" connection. I want to speak with a qualified employee of this company and resolve this issue as I have bank records as to the purchase and I am 100% confident that Limewire accepted my money as payment for their software.