Marc Moini has released two updates to his excellent utility Startup Doubler. Startup Doubler speeds up the startup times of your Mac by optimizing the process and caching some aspects of it. Version 2.5 was released to bring Mac OS 9 compatibility, but it included a new bug. Mr. Moini then released another update to fix that bug, version 2.5.1. Combining the notices for both releases, from Mr. Moini:
Startup Doubler 2.5 is now available for downloading.
Startup Doubler makes for quicker startups: Its software acceleration compensates for sub-optimal disk performance to make extensions, control panel, the Finder and startup applications load faster.
Save time each time you startup your Mac! Those seconds spent waiting while your Mac starts add up to a lot of time. Startup Doubler usually makes startups 20% to 50% faster, depending on the performance of your startup disk and the number of Extensions, Control Panels and Startup Items in your System.
Version 2.5, released today, adds support for Mac OS 9.0 and improves performance when a large number of extensions or startup items are used. Also enhanced is the program's capability to self-adjust to each system for best results.
Startup Doubler 2.5.1, it fixes a freeze bug introduced with the release of v2.5 this morning. My apologies for the inconvenience!