Thanks for the help guys. It turns out it was a mistake on my part. I ended sending the bitcoins to the the site I was planing to send the coins to anyway, albeit I was going to send a few coins less.

This all resulted from a simple clipboard mistake. I ctrl+c the address I wanted to send coins to and pasted it in the Electrum "Send" tab. Then I went to the "Receive" tab and again ctrl+c to copy, this time the receiving address of my wallet. Except that for some reason ctrl+c doesn't work on Electrum, right click -> copy does but not ctrl+c, go figure.

So when I pasted the address in virwox's site, it was the first address I'd copied, not my wallet's, and that's were the coins went. No mystery here.

I guess I got a little paranoid because of this being my first time using Electrum and all that. But when I logged-in into the site for which I needed bitcoins in the first place and saw that my service was "restored" I immediately associated one thing with the other and figured out what had happened.

Apologies.

Yesterday I used www.virwox.com to transfer 0.033 BTC to my newly electrum-created bitcoin wallet. I've used their service in the past to buy small amounts of bitcoin. Never had a problem before. This is my first time using electrum though. In past times I used a different client, Java based, can't recall the name.

I copied the first address in the list of my "Receiving" addresses shown in the "Addresses" tab in my Electrum client. Then using the virwox form I sent the bitcoins to that address.
The first thing that I noticed is that the bitcoins apparently never went to that address. They went to a different one altogether, how, I can not begin to fathom.

This is the transaction ID: 47448fd34ceed4cf032c7dd78651e835f12b304d2582300d8da68673f94c7553

It shows that the BTCs were sent to this address: 12HAybNqJJ7fBLtxUVQ8oyZf5birEJAhAx
Looking at the history of that address in blockchain.info I can see the address has multiple transactions.

This is my bitcoin address, the one I used when transferring: 1DkPa12uuJAdeS8dkxseZBRe8iQ4GUHdpq.

My question is: Could my client be compromised, somehow. Making alias addresses that all point or link to different  addresses? Is this even possible in the bitcoin world?
If not what happened? Why were my bitcoins sent somewhere else even though I specified my address as the destination address?

Thanks.