One of the warmly advised ways to solve problems is to turn minuses to pluses, turn the bad sides to good ones.
Where am I going ? Well, if testing is as automated as possible (and I mean completely automated), the boring task of testing turns into the nice task of writing the code that runs automatic tests.
It is a long known method, and CPAN actually has some nice modules that help people with that... but this is only Perl. C, C++, Lisp, VHDL code also has to be tested. And it isn't easy to write automatic testing systems for everything. Sometimes the program/design is complicated / interactive / interdependent or whatever, and it makes auto-testing hard.
Such thinking has a negative impact on my productivity in the past couple of days. Instead of testing the (rather bulky) VHDL core, I spend most of the time thinking how to automate it. Hopefully it will eventually pay off, or my time was in vain...