Update (6/18): Microsoft confirmed today that they plan to release a public beta of Microsoft Security Essentials (formerly codenamed Morro) this Tuesday June 23.

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I wonder if the built in antivirus will interfere with 3rd party AV applications. If so, Microsoft can keep MSE and I will stick to Avast.

So Microsoft is getting back into the anti-virus market. I've always wondered why they got out of it after the windows 3.1 days.

I'm more interested if it can stop anything at all!

I somehow feel more secure with 3rd party AV installed, though it'd be interesting to see how it matches up to the myriads of commercial products available..

When the beta starts, ill let you know how badly it screws up my pc.

Although I don't totally expect a high-end A/V, Microsoft is about time to offer a free A/V for all PC users. I expect Windows Security Essentials to be compatible with a 3rd party A/V like Avast! or AVG. The rest of all, great because there will be more barriers against Malicious attacks.

This security suite is very light...the scan engine is fast (i don't know how efficient), don't use much ram.... From Live OneCare is a big difference.More friendly GUI, complex settings... I hope this suite will be free and will get a VB100

Hopefully better than Defender...as it basically stopped nothing.

Looks like that the EU Commission will complain about that...

I bet this does its job properly...Since Microsoft makes half the viruses out there :)

Exploits, but not viruses. =/ Just bad coding.

Oh don't worry, I'm sure they are cooking up some way to argue that Microsoft should not be allowed to include Paint because it somehow defers users from buying editing software....