I just released VueScan 7.3.7 for Windows, Mac OS 8/9/X
and Linux. It can be downloaded from:
What's new in version 7.3.7
* Significantly improved speed of scanning by updating display
and writing files at the same time
* Reduced flicker when scrolling zoomed image
* Fixed problem with zooming on Linux
* Fixed problem using "Device|Auto scan" with "Device|Lock image color"