Thank you, so far I tried gregorw's advice, unfortunately as long as this is enabled, every time I start typing into URL bar Opera crashes ... it's weird that it's connected, but this it started right after I restarted after enabling it, happened every time, stopped right after I disabled it.
Will try the gustavwiz's advice, but yes, I am logged into sync.
Same problem for me since several months, it's really annoying. Many times a single reload also won't help, often it takes many attempts and patience to load a page like youtube properly. (Opera version 12.16, winXP)
Opera on my Laptop doesn't have these problems at all (same version, but win 7)...