What seemed to get this spark ignited was the fact that all three common utilities for checking on the L2 cache (MicroMat's TechTool Pro, Newer's Cache-22, and L2 Company's L2 Cache Tester) reportedly failed to indicate when an L2 cache was installed on a PowerBook 3400.
However, today's posting on the PowerBook Memory Source claims that this is a false alarm - that, in fact, the problem is with the utilities not being compatible with the 3400 rather than with the L2 cache itself. It also claims that Newer's Cache-22 will, in fact, recognize the L2 cache on a 3400 - despite some other reports that say it will not. Eric Belsley, on today's MRP, similarly asserts that there is no L2 problem on the 3400.
Meantime, expect updated versions of TechTool and TechTool Pro to arrive shortly.