Parlor Palm problems!
Sorry if this has been posted before, I'm still adjusting to the forum format.
Anyway, in my dorm I have two Parlor Palms. One was meant to replace the other, which was dying. Surprisingly, it recovered. However, both are falling victim to the same plight, and I don't know what it is or how to remedy it. The leaves are a lighter green, with white/silvery patches, almost like polka dots. The new leaves coming out look slightly twisted at the bottom. Bugs do not appear to be the cause here.
I've attached a link to a picture. As I'd hate to lose either plant, I'd greatly appreciate help! Thanks.