What types of sites do you visit, on a regular basis, to stay current on information security issues? Some examples from my list include:

• http://isc.sans.org/
• http://www.kaspersky.com/viruswatch3
• http://www.schneier.com/blog/
• http://blog.fireeye.com/research/

As well as following the security heavyweights on twitter.

I'm curious to hear what resources you recommend for daily monitoring. Anything specific to particular operating systems or other software. Are mailing lists still considered valuable.

My goal would be to trim the cruft of all the things I'm currently subscribed to and focus on the essentials.