I've been experiencing a lot of crashing on my iP4S running iOS 6.1.2. These crashes are occurring at most inopportune times, of course. I'm pretty diligent about minimizing the number of background apps that are open (I've been forced to play that hand), but that doesn't seem to prevent crashing. A lot of the more savvy posters on these forums say not to obsess over the free memory because the iOS manages it by itself, but I've found that not to be the case. I've been closely monitoring free memory (via IntelliScreenX). A typical scenario.... 1. Will have 4-5 non-memory-intensive background apps open. 2. The most free memory I've ever seen is 250 MB, and that is with a relatively light app/tweak load. 3. Free memory falls of and lingers around 6-10 MB. 4. Upon trying to do use any other function of the phone, like taking a picture, or making a call, the phone will crash. This has become very aggravating to the point where I'm debating upgrading to an iP5 or giving up on jailbreaking altogether and going back to Android (which I really don't want to do). I just installed "FreeMemeory" v1.0, which seems to work as advertised. But I'm still not happy with the robustness of my phone and the fact that it has become so high maintenance.