[Solution Here] Cannot Connect to Server Error - No Scrobbling

Oh and I use a Windows XP, by the way.

Proxy Settings is a generic error wich means that the client access to the internet is somehow blocked, so is not regarding the client itself but very likely some third security software wich is managing your computer's internet access.
So the reasons could be:

- you are actually behind some Proxy, quite common if you are trying to connect from some some shared place like office/university etc. Getting in touch with the local system administrator is the only thing you can do.

- you are connecting through a router/wifi. This devices normally have their own firewall/proxy built-in. It can be configured by browser and you should check the device user manual about how and what to do.

- You have an antivirus/firewall software installed on your computer, or you have one built in in you operative system. Double check configurations, once again consult its help section. Eventually shut down all these security softwares and restart the client, at least you'll know if that is the source of the problem.

- If all the previous steps didn't solved your issue, try to re-start your last.fm user session, simply from the client click on your username in the account dropdown menu.

There aren't really any other reasons why your client shouldn't be able to reach our servers, unless they're temporary offline for some reason.
You can check this in real time from
here.

At the moment there aren't any know connection issues on Last.fm side apart from some compatibility problem with Bit Defender firewalls.

Well, I used the Cleaner method described a few pages ago, the cached scrobbles I had are now gone, and my client still can't connect to the server. -_-

mxcl said:
The following steps should fix it:

• Quit the client
  
• Click "Run..." in the start menu.
  
• Type %PROGRAMFILES%\Last.fm\Cleaner and press enter
  
• Change your password at the site
  
  ---------------
  
  Now you can restart the client and enter your new password.
  
  On Vista type that the command into the "Start Search" bar instead (the bottom bit of new vista start menu).
  
  Sorry about this, questions welcome below.

I was directed to this solution from another thread, but I'm running the OSX client. Is there an analogue to this solution for Mac users?

I have tried pretty much everything suggested in this thread and I still can't get my client to scrobble onto the site. It says:
Error: Could not reach server.

All the songs I scrobbled last are in my cache. I've re-installed, re-entered passwords, clicked on my username a bunch of times, open and closed it, and it still won't scrobble. I don't have a proxy or a firewall on. So what else could I do?