Sorry for the long absence, folks, I've been terribly busy. Bev, the poem you quoted is actually by Yeats, not Keats, although everybody I know including myself always makes the same darned mistake, so please forgive me for the correction.
I'm going to go out on a limb here and say that the real problem in March 1917 was not with the Duma or the generals, whatever they were plotting amongst themselves (although here I must ask: why wouldn't they be trying to envision a provisional government, with themselves in power, since the tsarist one was clearly lurching towards disaster and they were in fact the only people in authority capable of taking command of the country and the army? indeed, wouldn't that be the responsible thing to do, if you were a true patriot? As there's no question but that people like Prince Lvov and General Alexeev were). No, the real problem was that the generals knew that most of their troops were on the brink of mutiny.
There had been an unprecedented number of desertions from the largely peasant army during the fall and winter of 1916-17 - something like a million men. An unprecedented number also let themselves be captured by enemy forces during the Russian retreat rather than face going home and being forced to take up arms again. According to Figes, there had already been a mutiny in one of the northern garrisons even before the mutinies started happening in the Petrograd garrison (under the direction, often, of junior officers like Sgt. Linde). After the March Revolution broke out, General Alexeev actually called back General Ivanov's expeditionary force to Petrograd for fear that once the troops reached the capital city, they would be carried away by the mutinous spirit of the soldiers already stationed there. I put it to you, griffh and everybody, that the tsar could simply no longer command the loyalty of his own army, from the generals on down, and that this is what made the crucial difference between the Revolution of 1905 and the March Revolution of 1917.
Of course, as it turned out, the provisional government couldn't command that sort of loyalty either, and the consequences were equally dire. Only Lenin had the bright idea that maybe World War I wasn't worth fighting, since the Russian people were so determinedly against it. I mean, think about it, 4 million casualties... what kind of effect did that have on everyday existence in the Russian villages?