I don't think any windows wallet is secure due to trojans that can keylog. Even if you think you have a secure password, if you have a keylogger it is not secure.My suggestion is to get something like liberte linux on a thumbdrive and keep most of your btc there and keep only a little in your windows bitcoin wallet...kind of like leaving your big money in a safe at home and only a little in your wallet.
cosmicboy
Does Bitcoin-qt work on liberte linux? I don't think it does.