After deleting a mail in the listview with the X delete button, the button doesn't respond to clicks anymore. It always reproducible and can be circumvented by selecting a mail and afterwards going back to the list view. Then the button reacts again.
version is 4:4.5~20100827.1171364-1maemo8.1169941 with sqlite backend
Fixed in r1175635.
Confirmed with version 4:4.5~20100917.1176264-1maemo1.1174921 , although it feels as if deleting now is much slower, closing.