A couple of days ago I went to my call log and found it empty. I normally just clear it on my own but this time they had disappeared. Now some missed calls will show up in my messages or not at all. My text messages are not showing up at all.
When you run out of memory, the phone will start deleting messages and your call-log. If you check under status you'll probably find that memory shows "0 bytes". You need to free up some memory. I can offer a couple suggestions:
1) Go to your web browser and "clear" your cache
2) Delete any preloaded data that you will not be using. An example would be Push to Talk or the "sample video"
3) After you do this, do a hard reset of your BB. While the phone is on, reomve the battery. Wait for a couple minutes and put it back in.
After you do this, check your memory status again. It will blow your mind how much memory you just freed-up.