I had an outbreak of mildew 'spots' - Iused a mild bleach solution and a
small scrubbing rush - ended up desstoying the 'fur' though.

p.s. I noticed that where the mildew formed is pretty much same locaion that
I noticed 'condensation' forming - at the time it made me think that perhaps
a drink had been opened up there and splashed on the roof - feeding the
mildew! ,maybe my imagination!

Steve