BB Bold 9000 :: BBSAK Wipe / Still Low Memory

was hoping I could live with this issue until 9700 hits the UK, but now seeing as its probably going to be 2011 before this happens, I need some help with my current 9000.It's on OS 5.0.0.592 and has 12452390 bytes (is that about 12MB?) file free. The main problem is, the phone is barely saving a week's worth of phone calls/emails/texts and I really need them all to be saved for at least a month. I'm a guitar teacher and I check what the craic is with my sutdents by going to their text number and reading back on the message history. But now, a week later and everyone's text logs are blank. I remember for the longest time, I could go back to the first message I ever sent, and I must have had about 10 apps installed. Now I only have GMaps, Viigo, Facebook, Google Sync and IM+, what I would consider essential to my daily workflow. I've tried MaxMem to clear memory, and that's after using that swiss army knife thing to brick the device first to make sure I really cleared the memory. All the tweaks I've read on this site were done as well.This is starting to get pretty frustrating, don't want to see that low memory screen every day, begging me to delete apps!