Viewing trailers in Steam causes my entire system to grind to a halt

[smackjack]

When I use the steam client to browse the store, viewing trailers will almost always cause my entire system to become unresponsive. While I can still move the mouse, I can't click on anything. CTRL ALT DEL brings up the log out buttons, but I can't click on them either.

Games themselves perform great.

[Zead]

Do a right-click somewhere in steam, once or twice. It's just some Steam glitch or something. If It's the same problem as I have, it should fix it. (It doesn't happen with videos only).

Right-click always fix it for me.