PowerBook 1400: Delays In Scrolling, Typing, Cursor Movement

I recently installed Mac OS 8 on my PowerBook 1400 with VST Zip drive expansion bay module. Now I am experiencing long delays with pull-down menus and scroll bars. Typing is also very slow and the cursor seems to stick and occasionally disappear. Is this a compatibility problem between machine and OS, or is it just my computer?
This issue is resolved by updating the driver for VST Technologies' expansion bay Zip drive. You can download the software from VST's web site.

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Published Date: Feb 18, 2012