[Galaxy Tab 10.1 General] alumine:
After playing around with the 10.1v for a couple of days, here are the problems I've come across.

Android Ver. : 3.01

Kernel Ver. : 2.6.36.3-00558-g7c1c334

se.infra@SEI-29#1

Build number: HRI83.BUKD9

Here goes:

Video playback is pretty choppy [alt. thread]

So far I haven't got any 1080p .mkv files to work. Heck most of my 720p .mkv stutters or doesn't play at all anyway. All are H.264/x264 .mkvs played using either MoboPlayer (with the ARMV7VFP codec update installed) or the default player. I know the literature mentioned that only H.264 Main profile is supported, but come on, my SGS plays those videos fine (except one which has an AC3 track - fair enough).

I'm guessing this is due to the lack of NEON hardware in Tegra 2. Nice job nvidia.

Update: After googling around it seems like there's no built in support for Tegra 2's h.264 decode hardware acceleration in the native Honeycomb libraries (--devs correct me if I'm wrong). There is however, this youtube video showing an unreleased Cyberlink media player doing hw acceleration. Although note that the device he's holding is a Galaxy Tab 7" (which of course, runs Hummingbird, and AFAIK there's no Tegra 2 version in the wild).

Apps have problems with plugged in headphones

This is really weird and annoying. If I plug my headphones to the jack in the middle of a video/audio playback (using both the default player and MoboPlayer), the sound would get routed to the headphones just fine. But when I, say, switch apps, or change media files using the gallery, sometimes the sound would get routed to the speakers even though my headphones are still plugged in. I can fix this by unplugging the headphone (which pauses the video/music) and plugging it back in - but it gets irritating after a while.

No proxy server settings

Important since I'm behind a server which I would really like to be removed but that's beyond my power. The XOOM guys have the problem as well. Just used Proxy Settings from the marketplace and most things would work.

App downloads fails sometimes

Sometimes if I put the marketplace into the background, downloads would continue to 100% but fail to install. Not sure if it's just me though. *Edited*

Browser ALWAYS fails to download stuff through the proxy

Weird really. Every time I clicked "save link as" or a site would try to download something it would fail - but only if I'm behind a server. I try to browse using WiFi as often as I can since I don't have that much quota with vodafone. Note that I am behind a Squid proxy with plaintext authentication (I just hate those stupid admins!) - without the username/password you'll just get HTTP error 407. I can browse using the exact same ports and protocol (HTTP) but can't download through the proxy. I still can't figure that out at all.

The only way I can get around this is by using Opera, and setting the proxy server in manually using opera:config.

No way to force the browser to use a desktop UAString

There's a solution to this apparently, and it works: link.

Contact imports sometimes gets stuck

Importing contacts from a .vcf file sometimes hangs (not force close) the contacts app. I exported my contact list from my SGS (had about ~112 contacts with disp. photos and multiple numbers in some of them) and put them in the Tab, and had to import 3 times. What's worse, I ended up with duplicate copies of the same contacts. So I figured out the easiest way of doing this is to delete the whole contact list and start again, but---

---There's no way to delete multiple contacts at once. I spent like 2 mins deleting contacts one by one.

Update: Solution: Sync contacts via your Google account. Thanks pegaxs for pointing this out.

Marketplace automatically switches screen to landscape mode

This annoys the hell out of me since I usually browse in potrait mode - the device feels a lot nicer that way. Whenever I launch the market, it rotates itself. Minor thing, but annoying. Okay, I'm nitpicking.

On top of those - only 1 usb cable (which wouldn't be a problem if it can be charged using USB ports in the computer), and a short cable at that. wtf.

Fyuh. Rant finished. For now.

Can someone confirm these on their tab as well? I can't seem to find any updates at all.

There's also no WhatsApp, Adobe Reader (the QuickOffice HD works, so not really a complaint), or a text messaging app (but curiously you can send an SMS to it and read it by sending it to your broadband number - it'll appear under Service Info. I haven't tried MMSing yet, but I tried calling to it. It just hangs up (with a busy tone).