Oncidium Pseudobulbs Brownish and Red, Help Please!!!

[hannahlea]

Hi all,
I've had an Oncidium orchid (actually, it may be a hybrid Oncidium) for about a year now, I purchased it at a farmer's market when it was in bloom. It's been sitting on a windowsill of a south-facing window. It recently bloomed (maybe about a month ago?) and now the flowers are starting to wrinkle up. The problem I'm having though is with the pseudobulbs! They've developed this weird brownish-red covering that doesn't seem to be an insect. Additionally, a couple of the pseudobulbs have started to develop a little white indent (visible in some of the pictures). Also, I just noticed today that one of the pseudobulbs that's brownest is totally green where it's covered by another leaf, so I'm thinking; maybe this is too much sun? What else could it be? Should I move my orchid? Can I save it? Any help is much appreciated! Thank you!