Would setting nice value to download thread as low priority as possible help things up? Or is it just because of IO activity that slows thing down.

Would it help if thumbnail fetching was done only when you view list and text parsing as it is now but maybe with lower priority value?

This pretty much explains what I´m trying to explain :
http://labs.qt.nokia.com/2010/01/21/...nt-in-threads/

.edit
Feature reaquest:
Tap thumbnail -> Video starts to play immediately
Tap text -> current behavior