What's wrong with Nettie?

[learning2letgo]

The bulb of my Oda. Nettie Valentine is drawn up like it's dehydrated, but I water it on the same schedule as my other orchids (once every 7 to 10 days, dependent on moisture in pot) and she's looking kind of sick.

She's in full bloom right now, but I'm scared something is very wrong. I'm still very new to the orchid world and do not wish to lose my favorite 'chid! HELP!

I'm wondering if the potting medium should be changed, I kind of think I can see salt buildup on the bark at the top of the pot, but I can't be sure. I'm not sure how old the potting medium is because I purchased this orchid from a vendor at Orchid Daze at the Botanical Gardens in Atlanta. The tag read "04/2007 Oda. Nettie Valentine". Would it be safe to assume this is the original potting medium and it's just due to be changed?



Any ideas?