Which altcoins are premined (and which aren't)?

Also, I had heard that satoshi premined 1 million coins before releasing bitcoin to the public. Is it true about satoshi?

Are there any solutions which prevent a 51% attack from working?

I searched for it and only found old threads where nobody was able to say there is a technical reason why it would be prevented. I am hoping that in the years that passed since those threads were made that the problem was solved...

I started on client 0.7, rock stable. Upgraded to 0.8 rock stable. Upgraded to 0.8.1 and it crashes a few hours after I start running it with a random error.
Last one was "failed to write block".

Is it just me or does everyone have it? (I want to know if I need to troubleshoot my machine or downgrade or what)

As far as I understand it bitcoin transactions are public transactions between anonymous parties. If someone captures your wallet and identifies you then you are no longer anonymous and then they could look at every transaction you made (public records).

However, is there a reason why you couldn't prevent that and maintain your privacy by destroying an older wallet?

2009-01-03 - bitcoin introduced according to wikipedia
2012-09-21 - blockchain ~3GB - according to https://bitcointalk.org/index.php?topic=63844.msg1209059#msg1209059
2013-02-20 - my bitcoin data folder is 13.4GB (6GB for "blocks" subfolder + 172MB chainstate subfolder + 7.07GB for blkindex.dat and blk0001.dat through blk0003.dat)

At this rate it bitcoin will become unusable due to the chain files becoming too large to store.
Is there any mechanism in place (or one that is being designed) to prevent this? If so, where can I find more info about the mechanism for preventing data chain bloat?

https://en.bitcoin.it/wiki/Litecoin#Criticism

This seems to have some very harsh things to say about litecoin.
Are not most of those criticisms applicable also to bitcoin (to varying degrees)?

Should I bother getting into litecoin in addition to bitcoin?

Is there any chance of an eventually unified wallet containing both coin types?

I want to limit the noise from GPU mining which means limiting the GPU usage.
GUI miner built in limitations do not work properly. I set the -s flag carefully to lower it to ~50MH/s and a few hours later I come back and its down to 2MH/s
Is there a good way to cap GPU usage?

Using GUIMiner I was getting the error code "no json object could be decoded" and couldn't find any info about it. I eventually figured it out, its what you get when you inputted username/password is wrong (at least, when using BTC Guild; which incidentally wants you to input worker id and password not your general id and password).