How long to download Ethereum Blockchain?

[lethal protocol]

So I downloaded the Ethereum-Wallet(MIST) because I want to get into altcoins as well as Bitcoin.

When I started the Wallet, it started downloading the Ethereum Blockchain. This is more then
24h ago at it seems the closer I get to finish downloading the whole thing the slower the download
gets.

I mean it's getting ridiciulous with this massive blockchain downloads and the wiaitng time,
especially because I download around 15GB so far. 15GB I could download in less than an hour
so why does this take so long with these blockchains I thought its like a p2p download,

Shouldn't it be pretty fast?


And o another note the number of total Blocks seem to be changing while downloading. I wouldn't
have been surprised if it would grow bigger because of more transactions in the blockchain etc.

but it is jumping frim 1,480,000ish to 1,580,000ish Blocks... back and forth...

I'm relatively new to the cryptocoin-world so forgive me if some of these questions seem ignorant or naive.

Thanks!