Ok, here's my thoughts...
I have used Norton AntiVirus on my computers starting way back around 2000-2002. (None on my phones yet, however) I will admit that it may have slowed my machines years ago, but lately, the last couple years at least, I have been using their internet security (2009 and 2010) and I haven't noticed any slowdown at all. Now this could be by design or possibly because my latest machines have had really fast CPU's. (My latest has an i7 quad core processor) I would think it would be hard to bog down these processors. In reality, it's probably some of both, design by Norton and superfast CPU's.
Everyone seams to have good things to say about Lookout. Like "It seams to be working, and it doesn't slow my Droid". My thoughts are it's good app as far as it goes. Has anyone had it catch or stop a worm/trojan/virus trying to invade or attack their phone? Now, I suppose it's possible none have tried but with the number Android OS's being activated worldwide in excess of 175,000 per DAY, I do believe the day is coming when this will be a problem.
One thing I like about the Norton mobile security product is it says it updates the virus definitions once a week. Going back to my computers "Internet Security 2010", it has automatic live updates and pulse updates every 5-15 minutes. This means that if a new virus is discovered, Norton pushes the definition to me and I have the ability to block/remove/stop it in my computer no more than 15 minutes after Norton writes the definition of this latest threat. This update feature is not mentioned anywhere in any information about Lookout. Not that I would expect definition updates for Lookout because it's free and that kind of constant updating costs money. That's why I would expect the Norton Mobile Security product to be sold (when it gets out of beta) on a yearly subscription service. (Just FYI, my Norton Internet Security 2011 upgrade for my PC will cost $69.95, and this includes a 1 year subscription to live update for upto 3 PC's)
Apparently no one one this forum has actually tried the Norton product. They have downloaded Lookout however. Heck, it's free. Yeah, I know the Norton beta product is free too, but it seams to be burdened with Nortons reputation from years ago. Another FYI... ("Norton internet security 360 2010" was PC Magazines "Editors Choice" for your PC internet security needs)
I'm not a big fan of beta products, I have enough trouble with non-beta products. That's why I won't try IE9 (but that's another topic) I also do not and never have worked for Symantec or Google or Verizon. I'm a semi-retired business owner living in Hawaii. I may have to take the plunge and try both Lookout and Norton Mobile Security. But I'll have to think about it.
Really like my "X" though. Best smartphone I've ever had.
. Ill have to check that out.
