If you use Windows 2000 and Netscape's browser, this site will not operate at full speed. Ham Academy is CPU intensive and while it operated well under Windows 95, 98, and Windows NT 4.0, it no longer does under Windows 2000. In fact it used to operate faster using Netscape's browsers than with Microsoft's IE. No longer!
Using Ham Academy with a Netscape browser under Windows 2000 now causes long periods of wait. Minimizing the browser and restoring it to normal size seems to help the browser get control and finally complete the operation. But operation is painfully slow.
An educated guess about what is happening is that the program switching algorithm used by Windows 2000 no longer favors CPU intensive programs such as Netscape's browsers. Whatever the reason, unless Netscape addresses the issue and improves how it operates, use of its browsers with Windows 2000 is problematic.
Reluctantly I come to the conclusion that IE is the browser of choice for Windows 2000 (although I continue to use both).