Received my 1TB box on Saturday and have been playing around with it at the weekend.
Firstly, I too lost all my planned recordings on Saturday night. Whether this was due to the clock change, or something else (I did tune in all the non-Freesat channels on Saturday night, could this have done it?) I don't know, but it was rather annoying.
Other thoughts - the cardboard box it arrived in is rather flimsy and had got squashed in transit. Luckily no damage to the contents but I wouldn't be surprised if a few do get damaged this way.
I still find its appearance rather unappealing, especially the plasticky silver trim/buttons - but I can live with it.
The mains lead - a two core affair with a standard figure of 8 socket on one end was very short - less than 1m - and the sticker on it is wrong, saying 'this appliance must be earthed' and recommending a 13 Amp fuse - and indeed a 13 Amp fuse is fitted, which I think is unsuitable for the very thin cable. I replaced mine with a 3 Amp straight away.
It's supplied with a network cable and an HDMI lead, but no satellite patch leads (which I would have found more useful).
My first attempts at recording were not auspicious - on Saturday I set it to record the F1 qualifying, and the Saturday afternoon play on Radio 4. It recorded the F1, but also the entire following programme (rugby). The radio recording failed with no explanation.
There's a bug in the channel guide, whereby the day and date you're looking at (normally displayed near the top of the screen) will occasionally disappear, leaving you all at sea. I haven't hit on the exact way to repeat this behaviour, but when I do I'll post it here.
Non-freesat mode seems very basic. I couldn't even figure out how to bring up a channel list once it was tuned, so if you want to switch from, say, C4 to BBC1, you really need to know the channel numbers, or be prepared to press the P+ button a lot of times! Also if you press one of the arrow keys in this mode, the screen darkens (as though some text is about to appear) but nothing else happens. I don't think there are any recording facilities at all in this mode.
I tried the "Humax" menu (an odd name for a menu option) to view some photos and videos from my PC, but found it very slow in pulling data across. But this could have been due to problems elsewhere in my network, so I won't blame the box until I've experimented further.
I'm looking forward to future features (ftp server, file manager, DLNA server etc.) and hope they're not too long in coming.
Other future enhancements that would be nice - perhaps a 'channel view' on the EPG, as I used to have on my Thomson DHD4000, where you choose one channel and scroll up and down through its listings. This way each programme name has the full width of the screen rather than a small sliver on the main EPG.
Perhaps it would also be nice if Humax marketed a single-tuner sat box that could act as a controller for the main box - so in a second room, one could program the HDR1000S remotely, watch programmes and so on, just as if it were in the same room. I know the programmes on the box will be available by DLNA eventually, but I was thinking of something a bit more sophisticated than that.