Not sure why this is marked as dupe - Bug #517410 is logged against "tropical" - I don't even know what tropical is and it is not mentioned in the OP or comments here at all. It also has nothing to do with Gnome as I and my wife both are driven nuts by this problem and we are both running KDE (it might however have something to do with GTK). It has been a problem since Ubuntu 8.10 at least. Of course it is possible there is more than one cause for slow open file dialogs! My experiences have nearly all been with OpenOffice.org - which is far more likely to be related to Bug #424132, although that has such an encompassing title that multiple problems are getting reported in the comments (scroll down for mention of slowness, they are definitely seeing this same problem)
Not sure why this is marked as dupe - Bug #517410 is logged against "tropical" - I don't even know what tropical is and it is not mentioned in the OP or comments here at all. It also has nothing to do with Gnome as I and my wife both are driven nuts by this problem and we are both running KDE (it might however have something to do with GTK). It has been a problem since Ubuntu 8.10 at least. Of course it is possible there is more than one cause for slow open file dialogs! My experiences have nearly all been with OpenOffice.org - which is far more likely to be related to Bug #424132, although that has such an encompassing title that multiple problems are getting reported in the comments (scroll down for mention of slowness, they are definitely seeing this same problem)