Why are my messages disappearing from my Wall

[tikka22]

HELP!! Today I noticed my neighbors and visitors older messages where automatically disappearing from my Wall. Also my own personal message request has gone. It seems if a new or current message is left at the top of my Wall than others at the bottom get deleted. I have messages dated from 2 days ago and have checked on other ppls Wall, and they have dates ranging back from months ago.
This just started today and I'm greatly concerned. I keep my neighbors requested info plus any communication exchange on my Wall which is involuntary being deleted.
Please make it stop, I've always lost valuable information. Thanks

[jandtandn]

This has always been the case. Older messages get pushed off of your wall. Your neighbors who have messages from months ago are more than likely deleting messages they no longer need to keep the old ones at the bottom.