Although I use Avira (free) , the good thing about MSE is that it updates regularly and seems it is quite reliable. I use the windows 7 own firewall now I have it.

I have used MSE for a while now with Windows firewall,seems fine.

Not that keen on it but have used it in the past.

If it was any good Microsoft would be selling it not giving it away free.

Don't like the Anti-Spyware part of it as it reacts to other security programs especially on XP.

I always had to turn that off when I was using XP.

Don't know if it has changed it's download habit of downloading with Windows updates.

Not sure if you can remove those updates now but you could not when it first came out.

I would say a middle of the road Anti-Virus it's ok but not great.

I would place it in the same category as Windows Defender not something I would want on this computer.

It does not have a Firewall with it but if you are using W/7 that firewall is ok to use.

spuds

Its fine as long as you have a decent Anti-Malware program to use along with it.

My old theory is any Anti-Virus program as long as you have one pay for Anti_Malware program that gives you full time protection.