This app presumably employs the fix posted by MacFixit.com today (12/29/03), and endorsed by Apple. If you get a page of code when you click on the download link, then OPTION-click on the link instead. The developer has not set the MIME type correctly for this file, and so it fills a browser page with code instead of downloading it to the desktop.
DESCRIPTION
SpeedStart is an AppleScript application that fixes the slow startup bug of Panther 10.3.2.
CHROMATIX The fix applied by this program is apparently not required for MacOS 10.3.3.
Attempting to use this program on both a Tibook and Pismo running 10.3.3 caused a "File Exists" error to show, indicating that Apple have fixed it themselves. (Version 0.1)