I don't know about what UPRC mentioned but I have noticed some similarities in some of the songs on Viva and some other artists.
The short intro to Yes! sounds A LOT like Andrew Bird (already mentioned this once) and though you can't call that ripping off, it still sounds very similar. Lost's beginning is pretty similar to Weighty Ghost by Wintersleep. I think middle part of 42 is pretty NIN-esque and like I mentioned earlier, the part around 4 minutes in Yes! sounds like Oceansize, and the part following isn't horribly original either, even though I quite like it.
Anyway, maybe I'm stretching it a bit and all those parts could be coincidence but in any case, Coldplay definitely aren't all that unique. That doesn't bother me, they still make nice music.
what a horribly boring album
Maybe you are growing out of Coldplay because I can't see how Viva is more boring than other Coldplay albums. It's clear that it's got more variety and it's not as monotonous as X&Y was for example.