Can't turn OSBooster off?

Although I cannot confirm details as yet, I feel compelled to warn readers about possible problems with the OSBooster program mentioned here last week.

Eric Richards sent a laundry list of complaints. Here are two examples: "(a) I have yet to find two of the alleged six files that were installed. They are either very well hidden (I did searches for invisible files with both Sherlock and File Buddy and Norton Disk Editor, which I'm very well versed in using), or are embedded into something. Either way, this is disturbing to say the least. (b) When I held down Shift during startup, the extension still loaded! It bypasses the Shift key's lockout just as some security software does."

Jamie Morgenstern confirms Eric's report, writing: "I installed it and decided I didn't like it. It apparently writes some code into the Finder. There is no way to turn it off even by starting with the Shift key pressed. I was unable to find any way to disable it and had to reinstall my System Folder from a backup to get things back to normal."

Update: I have already received two other reports that suggest OSBooster modifies the Finder in some way - and one contrary report that says no Finder modifications could be found and that the product worked fine. I have contacted the program's author for more information.

Update: Simon Jensen-Fellows (of Cogco) has replied on this matter: "There are six or seven files in OSBooster's inventory; 2 or 3 are actually installed depending on the setup. None are invisible. They are: 'OSBooster Extension', 'OSBooster Stub' (both in the Extensions Folder) and an Extensions Manager prefs file called 'OSBooster.' As for the program loading even when the Shift key is held down at startup and possibly modifying the Finder: this isn't strictly true. The Finder is not modified in any way. But, the file system is tricked into thinking that something else is the Finder. OSBooster undoes this either when the user starts the Finder or asks OSBooster to restart the Mac. But if the Mac is restarted by crashing or pressing command-power, then the extension must load in order to fail safe the changes (ensure it boots normally into the Finder). Thus, a forced restart shift key down will cause OSBooster to relaunch. (Just press the Finder button to return to normal).

BTW, we're now asking people not to use OSBooster with G3s. There is an unresolved problem that we're working on."