So what?! So what?!!!?!?! What DO you have installed on your smartphones? If you keep them at defaults, you should be hit in the face. . .
Here's the link to Tasky, though. I'm worried now because I honestly don't know where to find the total available RAM using Tasky either. I just suggested it because it's free and generally popular. Tell you what, the second link is the trial for Best TaskMan. Try that one if the first one doesn't work out.
http://www.telesoftas.com/binaries/Tasky_S91_SDK_SERIES60_FP3_signed.sis
http://my-symbian.com/s60v3/download/sendfile.php4?DownloadID=31
Edit, I do really appreciate you doing this, since it seems like it's not something you would've done otherwise. Thank you.