Abe seems to be the popular choice. What problems do you have with it?

There is confusion in your question. Which of the follow are you worried about exactly?

1) potential interference between different altcoin wallets?

My comment: why would there be any interference? Many people install several coin wallets on the same machine and they get along quite well.

2) interference across wallets belonging to different users?

My comment: If you're worried about this, you should rethink the way you implement multi-user wallet management. Check out my other response on this topic: https://bitcointalk.org/index.php?topic=406742.msg4441020#msg4441020  Hint: you only run one single wallet instance for the whole website.

Check out the OpenStack project. It's open-source and pretty much the standard in cloud computing.

It shouldn't matter even if all addresses come from the same bitcoind instance.
For the customers, they are not granted administrative access (i.e., private key) to the actual bitcoin wallet anyway.

In such systems, the server only needs to keep track of the assignment of addresses to different users, and the incoming and outgoing transactions of them (for deducing the users' balances). These can all be done using the database.

You can get brief technical specs here at their website (English version): http://www.gridseed.com/main.php

Orders are not accepted yet, but the release date is expected to be announced soon (they said they would sell the actual items directly, not pre-orders).

They sold some engineering samples at the release conference, but the price seemed pretty high (400 RMB per chips, or roughly $65 per chip -- according to: http://www.cybtc.com/thread-3226-1-1.html ).

4x Gigabyte 7950s for sale (unused RMAs from manufacturer). Can flash to F43 BIOS to run cooler and save electricity.

All cards are almost new and are sitting idle since arrival from manufacturer, as we don't have time and space to get these machines running (I remember I only tested one card, and the others are all in-box unopened).

I have 2x of them; and my friend have the other 2x. We can either sell together or in split.

We ship from 37212 USA. I have very good transaction feedback on the Litecoin forum. Or we can use escrow. I may add photos later if I have time.
Please PM with your offer and shipment info. Thanks.

My 7950/7970 GPUs are staying idle ever since my cost for hosting them became too high. May consider selling them when the market becomes good.

They are not dedicated mining devices though (they were purchased for high-performance servers, but the project was abandoned later. We later did casual mining for a limited time before shutting them down due to cost.)

^^ Bump.
Still taking offers...

I agree with you on a "speedier blockchain." It's painful to download and store the whole chain (~10GB now). Even harder to do it on a mobile device.
But I don't yet know how your proposal could be implemented easily, considering that all account balances have to be deduced from historical transactions in blockchain. I haven't read the blockchain pruning techniques proposed by Satoshi though.

No problem for local pickup. But the price is a little on the low side.
Before making a deal with you, I will first wait for other better offers (I'm selling for a friend).

Also, please check out later my other posts, as I myself may have other parts for sale shortly (Gigabyte/Sapphire 7950 / 7970 GPUs, etc). Thank you.

Rosewill LIGHTNING Series 1300W 80 Plus Gold Power Supply
MINT condition; only used for a few days;
With 5 years' warranty (will provide original invoice from Amazon)

Price: $170 + shipping or best offer (also accept BTC, LTC, FTC).  (Amazon/Newegg price: $220).
Ship from zipcode (37203), USA. Please PM me for international shipping.

More than enough to support 4x 7970 cards (overclocked). Runs very quiet and stable. Manufactured by SuperFlower, one of the best OEMs. even better than Seasonic 1250w in my experience.

Bought new ~2 months ago for my second rig, but didn't have enough space to host that machine.
It was only used for a few days for testing and then had been in box ever since.

You have to pay escort if needed. (I generally participate in the BTC/LTC/FTC community by answering technical questions).
Thanks.

Box:
http://i.imgur.com/g9lX19h.jpg

Front fan:
http://i.imgur.com/kGaqlKR.jpg

Back:
http://i.imgur.com/7WQAPLJ.jpg

http://i.imgur.com/zh15rNX.jpg

Thanks wiseman, you got my question right. 

I'm a little confused with the incentives for keeping participating nodes online in this new proposal. Thus my previous question.
I don't know if the proposal adopts a similar rewarding approach like BTC (using new block lottery in early stage and transaction fees after all coins are mined).

Check out the following report and plots about "What happened to early bitcoins?" https://bitcointalk.org/index.php?topic=215946.0
It shows whether early coins are being traded in exchanges (hint: very few).

Someone estimated there are at least 1 million lost coins.

I confirm it's working now. Maybe it was temporarily down?

I may have missed this, but is the new coin generation process lasting forever?

Good try. There is actually another project already doing well in this field:
http://btcpages.net/

They offer directory listing plus reviews/rating, etc.


To the original OP, I think you should at least add a search box at the top.

Are you doing BTC or alt-coins? If BTC continues to rise in difficulty at current speed, it would take a really long time to break even for newly purchased GPUs.