Thanks, all, for your help. It's nice to know that this isn't just a badly designed product and that a replacement may solve my problem. I will take it into the store where I bought it and see if they're willing to help. I haven't been impressed with their customer service so far, but we'll see.

Vmaniqui--the first time this happened, I contacted Dahon directly and they sent me a replacement free of charge.

Thanks again!