There is definitely a performance issue on startup with UltraEdit v13.10a+1. I am a long time user and always liked the editor as it had nice functionality and was very responsive. I recently got a new high end notebook from DELL (XPS M1710, Core 2 Duo, 2 GB RAM, 7200 RPM SATA HD, Nvidia 7900 GS (256MB) GPU, Windows XP Pro) so I took the opportunity to upgrade to the latest version of UE.
I launch UE via the recently used programs from the START button. After I click the icon the entire START menu sticks around for 2 or 3 seconds (it should disappear immediately - that is a BIG clue that something is very wrong in the performance department), then the computer grinds away for another 2 or 3 seconds and finally UE opens up. Now granted from launch to usability we are only talking about 5 or 6 seconds. However my notebook brings up Microsoft Word almost instantly (perhaps 1 second) without any freezing up of the START menu.
UE should certainly be MORE efficient than a bulky word processor like Microsoft Word. This is simply unacceptable performance for a text editor.