i think we're really blowing this out of proportion and that we've all read to deep into this..
in my opinion there is a limit.. sure.. *there is no limit*.. but there is a limit

.. let me explain:
Joe wants a computer not for gaming of any kind.. he wants a computer to surf the net and hang on IRC.. he gets a celeron 500 and is happy with it..
Lenny wants a gaming monster of a computer.. he gets a P3 4 Ghz.. with the latest grafix card and god knows what else..
*** 10 years pass *** (put time transition sounds here)
Joe gets home to his Quantum HomePC 2012.. surfs the net.. downloads some pron.. puts on his visor.. and does stuff we won't even mention.. goes to his buds on Video IRC and chats around with them for a while..
Lenny gets home to his Quantum HomePC 2012 and surfs the net to the Nintendo website.. finished FFXXX and feels all happy inside..
his woman gets home.. sits by another "terminal" for the same HomePC2012 and does the same as her man only diference is she finished FFXXXI instead.. they are both now playing FFXXXII (wich has natural real life envirenment grafix and looks like if you where actually there) thru the same website on the same Quantum HomePC 2012..
Lennys mom shows up with her 5 grandchildren.. they all sitt behind diferent terminals and all log in to the same Quantum HomePC 2012 and log in to the same site to play all together..
at the same time.. Joe wakes up and feels like chekcing up the weather.. he does'nt trust the weather forecast websites though.. instead he decides to make his Quantum HomePC 2012 calculate the global weather forecast wich gives him the results he wants in just 2 seconds.. then he remembers he had found some old encrypted papers at a ruind old shelter from WW3 wich he decides to let his computer decrypt to check out what it was.. then Joe decides to make his computer create itself an impossible to beat AI to play chess with his friend Lennys computer. He is hoping that since Lennys computer is so busy with the whole familly playing FFXXXII it will be slower and he will be able to beat it faster.. ...... he was mistaken..
the end..
hehe.. no but really.. i'm sure we'll have computers so powerfull by 2012 that we'll think of Deep Blue like if it was a crappy calculator hehe.. we won't even kn1ow what upgrading means anymore.. you guys should check out where they've gotten with Quantum Computers..