I have a year old Acer laptop. I am using Windows-7. I'm using the original Linden viewer that I started out with. It has been just fine for me. (Except, of course, for this current problem of mine, which makes nothing just fine for me right now.)
No changes that I can think of. But, I have gone and made an exception for the SL software, in the MalwareBytes anti-Malware program, the only really aggressive protection that I have at this time.
I also see how I can delete the SL viewer and then I guess I can put it back on again, if it is somehow still there, where I deleted it. But then, do I loose my big "friends" list and my "groups" list?
Any help will be greatly appreciated, Karen.