[popcornmix]

The other more or less reliable way to reproduce is when navigating the menus. Freeze here also happens at the exact moment when some submenu should load (screen content is subject to change). Instead of entering the submenu or starting up the plugin GUI freezes. The GUI freezes I think only triggered when I played some tv-shows/movies before. I think this cannot be triggered by only navigating the menu.

Do you get the hang while navigating with a video playing in the background, or are you just saying you played and stopped a video previously?
Are you overclocking? If so then disable that and confirm the problem still occurs.