Yes. It can take up to 3 months. Some take a few days. It seems to be a bit of a lottery on elapsed processing time.
Take a look at this link.
http://www.ukba.homeoffice.gov.uk/vi...ultTableAnchor
Tap in Manila Philippines.
88% of all July decisions for settlement visas took 40 working days ( 8 weeks ). 98% took 12 weeks.