The Midlands giants are hovering dangerously over the drop zone following Tuesday's 4-0 hammering at Manchester City and many fans already feel it is time for a change at the top, despite the fact Houllier has only been in charge for 14 Premier League games.
Only twice during that time have Villa managed to keep the opposition out, on home soil against Chelsea and Birmingham.
And, as Houllier faces up to a re-match with Chelsea at Stamford Bridge on Sunday, he acknowledges the statistic must change.
"The main thing that has to be addressed is we have to keep a clean sheet," said the Frenchman. "If you keep clean sheets you have a chance to win games.
"We have been guilty of being too naive and too indulgent defensively. I am talking about as a team. It is not about just four players, it is the whole team."
Source: PA
Source: PA