Wasn't it great? So, where did all that money go? The film's budget was $180 million. Of course, Schwarzenegger probably got a couple of tens of millions, but it's still a lot :) So, you're wrong to say that. ;) They plan to start filming Terminator 4 this May. They promise the premiere exactly a year later (i.e., 2009), but it's quite possible that they'll postpone it.
I agree, the effects were great, and I liked it too. Of course, there were some minor inaccuracies, but it was still a cool movie... I also want to defend the plot of the 3rd Terminator:
Firstly, Terminator 2 ends with the fact that all the technologies of the future are destroyed, and the development of Skynet is supposedly stopped, thus averting the Apocalypse, but this is an obvious paradox: how could they have done it if Skynet didn't exist...?
(A similar twist was in the film "The Time Machine" (based on H.G. Wells) (A scientist invents a time machine to save his beloved from death, but it never works because he built the machine for that purpose; that is, if she stayed alive, the machine wouldn't exist).)
Secondly, in Terminator 2, after the credits, we see an elderly Sarah Connor with her grandchildren, but that won't last long; someone else will invent artificial intelligence, and the same thing will start again)))
In general, in my opinion, the continuation is more logical than the ending in the 2nd Terminator, but they also wanted to make some money.
As for the series, you can watch it, but I don't see any logic in it; they won't prevent the events in the 3rd Terminator