konqueror freezing temporarily

When the bug starts, it keeps freezing for several seconds when opening new folders. Then some how it goes away. Restarting konqueror doesn't help. Actually, i think if i try to select the url, it does the same thing. I didn't figure out what triggers it, it happens rarely, but when it does it's very annoying, it takes many seconds to unfreeze. Anyone knows what triggers it and how to make it stop when it starts freezing up.