PC Speaker ocassionally hangs on an FIC VA-503+ under 2.4.[567]

Hi,

I have noticed the following problem on a system which I installed on a
FIC VA-503+ motherboard with a 450 Mhz K6-2 CPU. This problem is consistent and is present in kernels from 2.4.5 - 2.4.7. The problem is that occasionally the PC speaker will hang when making a beep. When the hang occurs the beep stays on, the screen blanks out, and all processing on the system appears to hang. After a few moments the system appears to unhang itself, the screen returns, and everything returns to normal. While it is not consistent, as not all beeps from the PC speaker causes the hanging, but it is frequent enough to make working on the console almost unbearable. The hanging behavior can be easily reproduced if I do anything to cause multiple system beeps; such as pressing tab a few times on an empty bash prompt which causes a beep to occur from the auto command completion feature as it warns you that multiple possible substitutions exist for your command completion request.

Is this a known bug?

If so is there a fix for it?

If it is not know how can I help in resolving this? (No oops exists so
nothing to send from there)