Today I decommisioned the last sparc in the house. I still can cross-compile Sparclinux kernels, and I keep old userland in case JavaStation needs an urgent attention, but I cannot build PROLL myself anymore. The 32 bit sparc was a toy for BSD people for a while. They are good at using obsolete computers, so let them bother, while Linux people move on to the best and latest hardware (such as Infiniband, wink wink wink :).
[Update: A terrible thought just occured to me. Since the Classic is not in production use anymore, I can use it for experiments. The temptation!]