You should keep your computer secure at all times, then you are protected.

I lost 2K BTC in the mybitcoin fiasco

Now I keep my savings coins in cold storage with a massively complex password - with 6 different backups, as well as with trusted family members in the event of my death.

Never again.

wow BrightAnarchist that's a lot sorry to hear that. i'm asking the post question because i use the simple btc client with 2 wallet backups and have the client installed on a virtual machine. many people told me to install the Armory client its told that is the best around btc clients.

and i think it's enough to have your btc secured. i read a lot of posts and everyone its frighten about the stolen or lost wallet issue that's why people need to know the best practice on how to secure your wallet

The Bitcoin Faucet's wallet was stolen a couple of months ago:
  http://gavintech.blogspot.com/2012/03/bitcoin-faucet-hacked.html

i'm familiar with most of the viruses today but how can someone steal your wallet since it's a psychical file that needs to be moved around. I know that if they have the typing keyloger on your pc they will find the key for the wallet but to steal a wallet needs to have a remote control client to access the 3th party pc etc it takes a port server. the problem it's very complicated so i assume that if someone is so stupid enough not to know that his pc its hacked then probably has a poor knowledge of pc use

Every modern trojan horse comes with full remote acess, including file browser.

not every trojan have remote control access and even if they do, you need to have a stable ip and have your firewall disabled etc its very hard to access a pc using remote access. 

sure but how can you steal my wallet from my pc?

thanks bro