indefinite hang in ./perl -I. -MTestInit ../ext/IO/t/io_multihomed.t

Smokers,

I was smoking 21384 on the weekend, and this morning, well, it's still 
smoking. A quick check reveals that it's been sitting in ./perl -I. 
-MTestInit ../ext/IO/t/io_multihomed.t for 13 hours.

I killed this process, and now the testing continues.

Which leads me to think that possibly some sort of dead man switch is 
needed: if a test doesn't phone home within a set amount of time it is 
forcibly evicted. 600 seconds sounds reasonable to me.

I'm not sure at what level this should be, though. I'd tend to argue 
for the test harness program itself.

Thoughts?

David