It did the black screen thing to me on Tuesday night and had to force it to close so I hope this patch has solved the problem.
Printable View
This also seems to happen on ps3, but so only if i have to exit to get Screenshot to work again or to get sound back but only after playing for a really long time, i will get black screen, it also doesn't save player set settings like macros or crosshotbar settings if I get black screen and have force quit.
Yesterday , after client updated , everything went fine , seems like ok now , cool :)
I still have this problem when i exit the game, on PC. I have to ctrl+atl+dlt then end program.