I have a serious problem with speed on the GtkListStore widget. Calling gtk_list_store_append (); gtk_list_store_set (); multiple times to add, say 2000 rows of various metadata exhibit something like a O(n^2) behaviour, whereas the old GtkClist was certainly O(n). Point is: GtkListStore is unacceptably slow when adding many, many rows. (I have a view attached to my list store.) Has anyone had direct experience with this before and a quick and obvious solution? Otherwise I recon I'm the first to use big list stores so I'll have to start writing test programs and dig into GTK until I find the flawed routine. It cannot be like this. Yours, Linus Walleij