For those who weren't aware, the KDE project is also working on a version of Kubuntu for mobiles.

IMO, we're approaching the point where mobile devices will be like PCs - you can install whatever OS you want on them. Right now the closest thing is people replacing Android with CyanogenMod; even though Cyanogen is effectively an Android derivative, the popularity of doing so demonstrates that alternative mobile OSs can be relatively successful even if not included by OEMs. The main problem right now is that each kernel must be specific to the device, since each one is wired differently and there aren't any standards (in use) for enumerating the various chips available (e.g. bluetooth, GPU, etc.).

I predict that this will be resolved sometime within the next 15 years (probably the next 5-10), as ARM becomes increasingly popular on the desktop/server.

I have Kubuntu running on my Transformer, and if there's one thing I've learned, is this: the best device is the one you have a working kernel for.
If it's an x86 tablet, you're in the clear. If it's ARM, then the vast majority of your problems will be related to getting various drivers/etc. implemented. Don't assume that the Android kernel can just be used as is - Android does a lot of stuff differently (e.g. no X server), which means getting the hardware to work with GNU Linux takes a fair bit of work. (Presumably Meego ARM tablets [do those even exist?] have kernels that can be used without any need for such changes.) So unless you have the ability and time to do this, make sure there's a reasonable amount of development going on for that device.

All that said, Ubuntu on the Transformer does work rather well once you have it installed and configured to your liking. Admittedly, it is rather obviously the result of a lot of reverse engineering (i.e. hardware support improves a bit once every few months), but it works rather well.

It will, just not in countries which think socialism is the same as communism.

It does. I have one of the original TF101s, and Ubuntu runs relatively well on it, though it's worth noting the kernel port is still in development.
The Transformer (Prime) has a full keyboard, so if you're buying it as a laptop replacement, just dual boot Ubuntu. If you only have the tablet half, then you might want to go with Gnome 3. Android is rather limited, so I can guarantee you'll get frustrated with it the moment you want to do anything non-trivial.

Here's a quick summary of what's working so far:

• repartitioning requires a closed source tool (an alternative is allegedly in the works)
• wifi (requires closed source driver)
• touchpad and touchscreen (no gestures yet)
• battery meter
• hardware acceleration is experimental
• uboot (a bootloader capable of providing a menu) is experimental
• bluetooth should work, but is untested
• camera doesn't work yet
• external speakers don't work yet

More info

Admittedly, it's a work in progress, but if you want an ARM tablet which runs GNU/Linux* then I'd say the TF is your best bet. It's also worth noting that all the ARM devices (or at least ones using the Tegra series chips) use different GPIOs for the peripherals, which means that the kernel is device specific. Consequently, if you're planning to run GNU/Linux on it you're going to want one with a strong developer following.

* I don't normally bother with the pedantry, but the distinction is very relevant here. Android is Linux; it uses a GPLed derivative of the kernel, which is why it didn't take long to get Ubuntu running on it (once the partitioning tool, nvflash, was available). Ubuntu is GNU/Linux; it has grep, sed, CUPS, OpenOffice, X, and everything else you want.

KDE has has a tablet style interface since before Unity/Gnome 3, it's just disabled by default.

Under that approach, it's impossible to have truly subjective test. I meant subjective only in comparison to the objective test.
Besides, if you can't trust the judges in a common law system to apply the test in a just and equitable manner, then you have bigger problems than defamation law.

We already have one. The term 'reasonable person' is a term of art used in law to indicate that an objective test should be applied. It's ambiguous because it's usually used to deal with unanticipated situations. In practice, this means that you usually need a court to decide what is reasonable, if the parties can't agree on it.

The subjective equivalent is 'a reasonable person in the position of X', which considers the knowledge and idiosyncrasies of X but still requires them to have acted reasonably. That one is typically only used where the other party knew X personally.

What if the nature of the allegation was such that they were still at risk, or that it was personally embarrassing to them? e.g. victims of rape and domestic violence

Certainly, reasonableness is important and I doubt a reasonable person would consider an anonymous posting on a forum to be convincing, but to allow all anonymous allegations would be a system ripe for abuse.

Probably the kind that care more about saving lives and recouping their costs than n figure profits.

The plan has been rejected by all the major Australian content organizations. They're still waiting for the iiNet v AFACT High Court judgment, since it will have a significant impact on the playing field.

http://delimiter.com.au/2011/11/29/bugger-off-content-industry-tells-isps-on-piracy/ (There are some more related articles on the site)

Don't forget the open source hentai...

It depends on what the burden of proof is, at which point it becomes a legal question. If they suspect that it exists, then in some jurisdictions you could be forced to hand over the keys/passwords (e.g. England). It's also worth noting this can work against you - in some jurisdictions, the burden of proof is on the defendant for certain crimes (e.g. this was the case in Victoria, Australia for drug possession charges until R v Momocilovic, where the High Court ruled the statute could not be enforced due to a procedural issue in its passage. i.e. a technicality).

If it's reasonably likely that that is the case, then IMO it would satisfy the burden of proof under civil law (on the balance of probabilities), and maybe even the criminal burden of proof (beyond all reasonable doubt) if it was a very obvious decoy. The courts take a very dim view of anyone trying to exploit such frivolous loopholes - despite the public perception, lawyers limit words to their literal meaning.

Technical solutions are all well and good, but if you're doing anything which you to think could end up before a court, talk to a lawyer about it. Though really, if it reaches that point you should consider the system a failure.

(IANAL, this is not legal advice.)

Or maybe they're recognizing this. Think about it. The obvious replacement for paper (if you're just viewing something) is a tablet. And HP has designed to integrate a tablet into a printer, which would (likely) allow you to view documents that had been 'printed'.

Yes, it's nothing we can't do now with CutePDF, etc. But the average consumer wants a simple, one-click process and something like this has the potential for that.

I remember using Win 3.1 (installed from 6 floppies), and even then HP's printer drivers took 3 floppies. Something is very wrong when the drivers are half the size of the OS.

Something worth keeping in mind: certain types of porn are illegal in certain jurisdictions. e.g. apparently BDSM porn is illegal in Australia.
It's also worth noting that unless the dummy partition is convincing (i.e. it looks like you actually use it for that purpose), the first thing anyone (who knows what Truecrypt is) is going to think is hidden partition.