I’ve released new versions of the ComboListBoxControls and the TabStrip library. I’ve improved the performance for item/tab insertion, removal and retrieval. For the TabStrip the importance of this change is low because tab strips usually contain only few tabs. But for the combo box and list box controls, we’re talking about improvements by factor 65. When previous versions required 9.4 seconds to insert 10,000 items into a list box, the new version requires only 0.14 seconds.