Eseries / Communicators :: E71 Keeps Giving Out Of Memory Error

My Nokia E71 (it's black so it may be an E71x, I guess) keeps giving me out of memory errors. I use my phone for nothing but voice calls, text messages, and emails. I have cleared all call logs, deleted all emails except 5 (they have no attachments) and cleared deleted emails, and deleted all text messages. I went into file manager and made sure there are no images, videos, etc. on the phone. I set up options to use memory card for emails. I've turned the phone off, waited 15 or 20 seconds, and turned it back on.

I did all this a couple weeks ago. Ever since then. every couple days I get these out of memory errors, and the phone memory shows me 119 MB used and something like 300K free. I'm at the point where every few emails that come in, I have to delete all emails, erase all text messages, etc. or the phone is just too low on memory to operate. I don't have any additional applications installed. I've even tried to delete built-in apps such as RealPlayer but it didn't seem like that was possible.