Depending on what Brazilian city you live in, it is quite common for there to be delays. The CIE is prepared in Brasília and the Ministry of Justice sends them out in bulk to the state headquarters of the Policia Federal in each of the states. From there they are sorted out and delivered to the Regional Superitendencies (delegacys responsible for foreigners) in each city or jurisdiction. This does take time.
Cheers,
James Expat-blog Experts Team