The Bush presidency pre-9/11 was looking pretty awful - people weren't happy.
Bush was actually reasonably popular before 9/11. IIRC, he had approval ratings in the mid 50s in the summer of 2001, so I don't think that statement is correct. After 9/11 of course, his approval ratings went way up, as they usually do for any president in that type of situation.
Allow me to rephrase.
Bush's approval rating had slipped I believe to the high 40s... 49% I think.
Bush's honeymoon was VERY short. Let's not forget the sh*t he copped for his holiday in August.
People were not terribly happy with him - that has to be one of the lowest approvals within a year.