Which is Accurate?

I was surprised when I opened my account in one of my favorite earning sites because the PR of one of my blogs dropped to PR 0. I hurriedly checked on this link http://www.prchecker.info/ and http://www.mypagerank.net/ but they gave me different results. I am confused now if which is really accurate in giving us the updated blog PR. *sigh*

My Blog PR Drop

I just noticed today that my blog pr dropped from 2 to 1. I was busy in the previous weeks and I have no time for my blog anymore. I am sad about this bad news because I'm aiming to make it higher. I need now to work hard again. Hopefully it will be back soon or it will turn into higher rank the next time.