New flavours of coffee
Bill says I swear that Microsoft issues a new "patch" every time a new flavor of coffee comes out. I didn't know coffee flavours come out that fast, but then I haven't tried a vanilla latte...yet.
Security Patches once/month means that flaws have a month to be exploited before the patch, unless MS decideds to release an emergency patch. This also has the current problem of MS taking months to patch flaws after they have been informed of them.