Here are two articles on it. I didn’t know you called it a browser hijack (makes sense though now that I know what its called). I kept googling with the phrase ‘browser default address changed’ and then stumbled upon what this is actually called.
Here are two articles I found useful that should help you understand and remove it as well (I still haven’t removed it as yet, but intend to soon)
http://www.spywareinfo.com/articles/hijacked/
http://www.pcstats.com/articleview.cfm?articleID=1579
One Comment
this is good advice and save ppl from needing to re-install