Heh... not quite. Just busy.
The AI often holds a lot of units in reserve in cities away from the border and then unleashes them all at once, when you think his army's depleted of nongarrison units.
There are a couple of solutions to this 'problem' - spreading a religion for which you hold the holy city is one, and spies (if you're up to that point in the game) are another. Speedy units such as horsemen are also great for recon. And if possible, you should always get open borders and check out another civ's lands before declaring war.
Incidentally though, the "hiding troops and then unleashing them" strategy is very effective for humans in multiplayer. (In one game I'm in at the moment, a teams game with 4 humans split into two teams of 2, my teammate and I hid a colossal naval stack just off the coast of their lands, in the fog for them - and then struck [and destroyed] both of their capitals in a single turn. The attack was so effective because neither of them suspected anything was coming, and thus their capitals were under-defended.

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Since giving units has no role in diplomacy, I doubt AI's do it.
I think that's true - personally, I have never once witnessed an AI gifting a unit to another AI, even if they're a teammate. (Of course, just because I haven't observed it doesn't mean it doesn't happen. It just means it's less likely.)
Hello, can anyone tell me how to copy my log from the game ??
I want to post it too. Thanks in adavance
Actually, I'm not sure how to do this one either. If it's possible, I'd be curious to know how, since it would also be useful for me.
Does anyone know of a cheap, legal way to replace a scratched or broken disk? I got one little new scratch on my Warlords disk and now the game won't recognize it as the proper disk - it opens the menu when I stick it in, but when I tell it to play it demands the proper disk! Yes I am telling it to play Warlords with the Warlords disk, and no I didn't alter my computer or the program in any way since last time I played. I heard somewhere that companies will replace damaged disks as to justify copy protection under Fair Use laws, but I don't know if that's a myth.
Hmm, I'm not sure, but I find it unlikely that you'd get a scratched disk replaced for free. You could always ask the local store where you bought it though, everyone has different policies.
If they won't replace it though, there's no legal way to get a cheap or free replacement. You may have to buy a new one, unfortunately.