There appears to be some activity with Google Page Rank, reports Whims and Wonders blog, which noticed some fluctuations in the last day or so.
Okay, back on topic. The data for externally visible PageRank didn’t change. The only way someone would notice their PageRank changing last week is for example if they were checking for a different canonical url (e.g. externally visible PageRank is shown for www.example.com, but Google changes the canonicalization from www.example.com to example.com).