Actually, the answer is, maybe.
Look at 8 C.F.R. § 316.5(c)(1)(i), The answer is there. Departures of more than 6 months and less than 12, do not necessarily break the required continuity, but the burden is on the applicant to establish that you did not, in fact, abandon residence in the US. Be prepared for a prove you didn't break continuity under the regulation. You can show maintenance of ties with the following facts (this is not an exhaustive list):
(A) The applicant did not terminate his or her employment in the United States;
(B) The applicant's immediate family remained in the United States;
(C) The applicant retained full access to his or her United States abode; or
(D) The applicant did not obtain employment while abroad.
No. Your period was cut. The good news is that it restarted once you came back and instead of 5 years you only have to wait for 4. I am assuming you returned in August of 2007. So you wil be able to apply aproximately in June or July of 2001. Best of Luck