<human>: I'm an expert computer user. I build my own computers and have never had a virus, maybe a dinky little trojan but nothing big. Today I turn on my computer and I'm typing a poem in notepad and Avast finds a rootkit in my boot sector called Whistler. Avast tried to remove it but failed, though it did remove some trojan files in the Sun Java cache. I tried MBRcheck and it didn't work. Finally I just had to use the Vista installation cd to write a new MBR and MBRcheck says I'm good to go now.

I do visit some "tube" sites here and there but nothing with any annoying fix your pc pop ups. I guess I picked it up at one of those sites last night, though I clicked nothing. Maybe there was a Java exploit used. I'm thinking of removing Java completely as I only installed it for Openoffice I think.

What pissed me off the most is a program was allowed to write to the MBR.....I mean WTF?! Let's hear some internet safety advice/horror stories.

Give me the gist of the text in a nutshell
<bot>: Expert PC user infected with a virus that wrote to the MBR. Removed it but still super pissed that it happened.