How does your gearbox feel?

My gearbox is worrying me.
dual carriageway / motorway travelling above 60 - 70, approaching junction or slowing, knock it into third and it crunches and doesn't go in well at all.
it's an 07 with 26k, is it a new gearbox at dealer effort?
 
Mine is rubbish from cold like most peoples, normal driving its fine, a little rough in 4th/5th/6th on occasions.

Hard driving 1st/2nd/3rd are great, 4th is pretty awful, have to be slow my gear change right down if i stray over 5000rpm in 3rd. 5th and 6th are ok.