I have applied for a PhD position at a university in UK at the end of January (in time before the deadline, which was also at the end of January). Shortly after, I was invited to an interview, which (in my opinion) went quite well. However, since then I haven't heard anything. So, it is now approximately 12-13 week since I submitted my application and approimately 9-10 weeks since I had my interview. There is also a online system where one can check the application status, but it hasn't changes since I firstly signed up.
This is my first PhD-application, so I have no idea how long it usually takes and I also have no idea about the university system in UK. However, on the homepage of the university they wrote that it usually takes a "few weeks", so I am beginning to worry a little bit.
After how much time is it not too impolite to write an email to the admission comitee? At their homepage, they wrote that one should not ask questions like "How long does it take?" or "Do you have already a decision?", which I of course totally understand, but at some point I think I should ask in order to check if nothing went wrong with my application...