Open a new window. Create a new tab and click a link in the bookmark. While the page is loading, close the tab using either Command-W or the mouse and Safari/WebKit will crash. This does not happen if there is only one open tab. Problem exists in WebKit r17434, could not replicate in Safari 2.0.4 (419.3). Exception: EXC_BAD_ACCESS (0x0001) Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000004 Thread 0 Crashed: 0 com.apple.WebKit 0x00326b64 core(WebFrame*) + 20 1 com.apple.WebKit 0x00329510 -[WebFrame webView] + 16 2 com.apple.Safari 0x000230d8 0x1000 + 139480 3 com.apple.Foundation 0x92969bf8 __NSFireDelayedPerform + 304
The fix for 11443 appears to have fixed this.