SIGKILL when I show viewcontroller with webview
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I have ios application. Some view controllers contain webviews. **Everything works nice ,except one prolem**:

When application is launched and i do not use it for some minutes and than continue my work, it works properly, but when i want to load viewcontroller with webview, it crashes   with **SIGKILL** error. There are no problems with other viewcontrollers after some break.
Here is the code which i use for webviews: 

    _webView = [[UIWebView alloc] initWithFrame:self.view.bounds)];
    [self.view addSubview:_webView];
    _webView.userInteractionEnabled = NO;
    [_webView release];
    // here is the local page, the same happens if i load internet page..
    NSString *path = [[NSBundle mainBundle] pathForResource:@"localpage" ofType:@"html"];
    _url = [NSURL fileURLWithPath:path];
    [_webView loadRequest:[NSURLRequest requestWithURL:_url]];

So the question is why application crashes only trying to load viewcontrollers with webviews after some break ?

Thanks. 