iTunes can't find song names online / HTTP Client Error
When I insert a CD iTunes hangs for several minutes then returns an error message "Song names cannot be found online, do you still wish to import?". I tried in my wife's Mac using iTunes and it worked fine (so I know the song names DO exist online). I've also tried turning off the filewall and uninstalling any apps on my PC that might be interfering, and reinstalling iTunes (twice). As well as putting gracenote into the safe sites list on IE Explorer. Also, after I select "no", another error message "HTTP Client Error" comes up.
Frustratingly, it was working fine a few weeks back, I've no idea what has caused it. Screen shots below: