What is your battery status?Could it be that your batteries are actually in need of replacement? I have not had any of the problems you describe. I can lock and unlock my unit without any problems. But I think I am using the atest beta 24. At 4/19/2005, you wrote: >hi all when i try to lock the unit i get the following >error saving voice recording or batteries are low please replace now >message when i arrow up and down the settings key pad i get weird things >such as m and rss then the whole unit locks up this only started happening >when i installed firmware 25 and i have tried the 2 b reset removing the >battteries and even reformatting my compact flash card. I amusing a one gb >card.