For a past few days, it seems very disturb me when using the Google search, the query seems to force us to fill the words verification, but after i do that then the pages suddenly stop and not refresh... it's really disturbing... is it you guys too...??
Does that for me on occasion, usually when I have uTorrent running in the background or if I;m coming in via a proxy. Matt Cutts did a video on it once I believe. It's bot prevention on their part.