I blogged about the free Comodo AntiVirus / Firewall software some time ago. (Please see
HOW-TO: Getting started survival guide for Comodo Free Firewall + Antivirus for Windows ) I never got around to creating a newer blog post for their version 5 product, so doing so now to capture the knowledge of installing that "best ever version" of their product.

I encountered a Dell Inspiron 1525 preloaded with Windows Vista that suddenly stopped audio sounds. All settings seemed correct at first glance. Device Manager showed the sound device working properly.

So I booted off of an Ubuntu 9.10 live CD, and when the Linux desktop came up, sound came from the computer speakers. Thus the hardware was confirmed to be working.