There seems to be a bug with the new YYYYMM month entries; it *starts* on the first day of the month and *back* to the previous month. If there are no posts on the first of the month, all entries are from the previous month (MM-1)
Example: http://blogs.mie.utoronto.ca/roller/page/oscar/200510 shows only September (200509) entries instead of October. Perhaps YYYYMM should start with the *last* day of the month and back N entries.
