Hi Robin, we moved your post to the Forum FAQ section
There are bots out there that are programmed to try to hack into forum accounts, etc. The 5 login-attempt limit is a standard feature of our forum software and is in place to thwart exactly this kind of attack. And beyond that, there really isn't any way for anyone to hack VAF, given the great
programmer we have working on the site

, so no need to worry.
On a lighter note, it could also have been someone who simply wasn't sure what their username was and tried yours, it happens!
In any case, no need to worry - but do keep us posted if you find this is happening repeatedly to your account in particular.