Safari prevent shut down
Hi
Recently, I've experienced this on both iMac and MacBook Pro running 10.10.3
Safari either unexpectedly quits or freezes and I have to force quit, "due to a slow or unresponsive web script".
When I re-start Safari, it just bounces up and down on the dock for about 5 minutes, refuses to open, and then goes inactive. When I click on the Safari icon on the dock, it is unresponsive (it won't even bounce up and down).
Then, when I try to restart or shut down my mac, it reports that the shut down failed because Safari refused to quit. When I try a force quit on Safari, it won't work (sometimes it doesn't even appear on the Force Quit popup menu).
So I have to use the power button to switch off my mac, and then I get the "you shut down your computer because of a problem" message. This can't be healthy for the mac.
This has happened a few times in the past 3-4 months, even after installing the standard updates when prompted. Has anyone else experienced similar behaviour? Apologies if this was posted elsewhere, the only relevant posts I can find are from years ago so won't apply to the latest operating systems.
Thanks
Rory
MacBook, Mac OS X (10.5.8), mail.me.com