i doubt this settles it for you: i have never gotten the thing you mention in the middle of any of my Macs screens, have never seen that on any Mac, and i am not exactly sure what you mean, except that i am very sure i have never seen that behavior...
ApplWindows is (imo) a much better way to switch between apps and though it is old, it is free and works flawlessly on my Macs (all running 9.04 and i have both OldWorldROM and NewWorldROM Macs) download HERE
and pay close attention to the 'HOTSPOT' feature in the ApplWindows control panel...
and from an Apple TIL article about NewWorldROM: http://til.info.apple.com/techinfo.nsf/artnum/n58342
Hardware-specific code resides in firmware (ROM) that fits into one ROM called the boot ROM. The boot ROM includes the code and tables needed to start up the computer, load an operating system, and provide common hardware access services.
All higher-level software resides in what has been historically known as the Mac OS ROM, but with much of the old hardware-specific code moved into the boot ROM. As before, the Mac OS ROM can still be augmented by enablers, the System file, and extensions.
Prior to the iMac, all Macintosh computers required a ROM component that contained many components of the Mac OS software. The ROM-in-RAM approach sidesteps this requirement by copying an image of the Mac OS ROM into RAM before the Mac OS begins operation. Once the Mac OS begins operation, a Mac OS ROM image in RAM and an actual Mac OS ROM behave in the same way. No new or different software interfaces are directly accessible from the Mac OS. During the boot process, software contained in the Mac OS ROM file communicates with Open Firmware to collect information about the hardware, using the Open Firmware Client Interface.
Performance of a PowerBook computer using ROM-in-RAM should exceed performance measurements for other Macintosh computers with comparable microprocessors and speeds due to the improved interrupt handling with the ROM-in-RAM approach. In addition, performance is improved because code that used to exist in ROM is now in RAM and RAM chips operate faster than the ROM chips.
Because the Mac OS ROM image is stored in RAM, approximately 3 megabytes of RAM is removed from availability for other uses. In effect, a system with 64 megabytes of RAM appears to have only 61 megabytes available. Some portion of the missing 3 megabytes is offset by having fewer patches in RAM.
Data Structures and Files
The Mac OS ROM image is contained in a new file, named "Mac OS ROM", that is kept in the System Folder. The Mac OS ROM image is exactly the same as it would be if it were an actual Mac OS ROM, containing the high-level software, the kernel software, and the 68K emulator."
search Apple TIL here: http://til.info.apple.com/techinfo.n...+search+simple
[This message has been edited by wlonh (edited 08-20-2000).]