title: iOS Low Memory Crash, but very low memory usage
body: <p>This has been annoying me for a long time. My app runs taking up about 2.74MB of memory.  That's fine. But then when it creates a UIWebView it goes up to around 5.87MB and proceeds to crash. Those are the values given under Live Bytes in Instruments while running on my 1st gen iPad.</p>
  
  <p>There is no crash log that I can find.  The following is from the console:</p>
  
  <pre><code>MyApp[1205] &lt;Warning&gt;: Received memory warning. Level=1
  MyApp[1205] &lt;Warning&gt;: applicationDidReceiveMemoryWarning
  SpringBoard[30] &lt;Warning&gt;: Received memory warning. Level=1
  MobileMail[1199] &lt;Warning&gt;: Received memory warning. Level=1
  configd[26] &lt;Notice&gt;: jetsam: kernel memory event (95), free: 428, active: 1853, inactive: 1011, purgeable: 338, wired: 15122
  configd[26] &lt;Notice&gt;: jetsam: kernel termination snapshot being created
  com.apple.launchd[1] &lt;Notice&gt;: (UIKitApplication:com.apple.mobilemail[0x8966]) Exited: Killed: 9
  com.apple.launchd[1] &lt;Notice&gt;: (UIKitApplication:com.MyApp.MyApp[0xdd4f]) Exited: Killed: 9
  SpringBoard[30] &lt;Warning&gt;: Application 'Mail' exited abnormally with signal 9: Killed: 9
  kernel[0] &lt;Debug&gt;: launchd[1207] Builtin profile: MobileMail (sandbox)
  SpringBoard[30] &lt;Warning&gt;: Application 'MyApp' exited abnormally with signal 9: Killed: 9
  configd[26] &lt;Debug&gt;: CaptiveNetworkSupport:UIAllowedNotifyCallback:70 uiallowed: false
  ReportCrash[1206] &lt;Error&gt;: libMobileGestalt loadBasebandMobileEquipmentInfo: CommCenter error: 1:45
  ReportCrash[1206] &lt;Error&gt;: libMobileGestalt copyInternationalMobileEquipmentIdentity: Could not get mobile equipment info dictionary
  ReportCrash[1206] &lt;Error&gt;: Saved crashreport to /Library/Logs/CrashReporter/LowMemory-2011-05-12-160645.plist using uid: 0 gid: 0, synthetic_euid: 0 egid: 0
  </code></pre>
  
  <p>I have removed all calls to imageNamed, changed autoreleased stuff to alloc/release. But I cannot work out why this is happening and it's driving me insane. </p>
  
  <p>Thanks for any help!</p>