All monitors are subject to these sorts of problem - it just seems that the current generation of larger IPS panels are very much more prone to these particular tint issues, and to a much more noticeable degree. Unless these IPS panels are being used in cheaper screens (where expectations are lower and these problems might be more forgivable), I would say that it's unacceptable to charge £300+ for an IPS screen and not make sure either the panel has much better uniformity or, at the very least, provides controls which can better correct the problem when it is there (by allowing several screen areas to be adjusted independently of one another).
I made a realization about the U2410 which sums up the real problem though, particularly for people buying in the UK. In the UK this screen is in the "around £500" category. When we buy this screen we rightly approach it with the expectations that price tag brings..IE we don't expect near perfect like with Eizo priced screens etc, but we DO expect something with no OBVIOUS flaws which, in some regards, can make the screen worse than even the cheapest TN panels!
However that's where we're wrong.. This screen is NOT a premium screen. In the US, if you go via Bing to the Dell Ebay store, Dell will sell you a factory new U2410 for $450 or less - That's £275. Likewise even at launch (when you'd expect the screen to cost the most) Dell sold the U2410 in Hong Kong for £266. Keep in mind these are ordinary end user prices - a big business would get even heavier discounts. So here in the UK we're approaching the U2410 with "£500 screen" expectations, whereas in reality the U2410 is a £250 screen - it's just that Dell are massively overcharging the UK for it right now. Once you realize this things make much more sense.
Unfortunately, even though we're paying almost double (and more than double if you go via Dell UK directly as an ordinary end user) what other countries are, we get nothing in return for it. We get the same random quality LG panels, where some have really excellent uniformity, some are so bad that many would consider them literally unusable, and everything in between there.
Worse, unless my own/others luck is simply bad, I'm also starting to be of the opinion that the quality of panels Dell is paying LG for means these screens are more prone to dead pixels than an equivalently sized TN panel from one of the better manufacturers, and Dell only swap for 1 LIT pixel, not 1 DEAD one. The irony of this is that a lit pixel tends to be less noticeable on everything except a black background, making Dells policy a nonsense.
So, what else to buy? Well, I'd wait to see if there's any VA panels ahead, which have low input lag, because manufacturers are becoming more more aware of the importance of providing a gaming mode. If that's not critical I'd look at buying the Apple 24" Cinema display, which is in the same price ballpark if you can get a student discount on Apple products. ACD's appear to be somewhat less prone to the tint issues (although not entirely free of them either) probably because they're actually paying LG for a higher grade of panel. They also avoid the colour gamut issues (with the good and bad that brings) and the LED backlighting should mean they will run noticeably cooler, even if they don't burn much less power. Likewise they use a glossy finish - I'd normally prefer matte, but the coating on the U2410 is thick enough that many would choose glossy over it.
If you simply must consider this screen then I'd now take a look at the HP LP2475W, because HP AREN'T refusing to swap their screens if you complain about any tint issues, unlike Dell. Otherwise wait for Dell to stop ripping the UK off on price, or get ready for the panel lottery this screen brings.. They are very good screens when you get a good one.