Hey guys...

So basically I can't play minecraft anymore...
It all started about 2 weeks ago when I suddenly couldn't log in locally, (just got the error that says try again), and I had to play from the website instead. Now all over sudden, yesterday I couldn't play on the website either and I still can't!

I log in and press the play in browser, now nothing happens really other than a black screen where the game should be...

I've googled around, but haven't been able to find a solution to this, so I was hoping maybe one of you guys knew how to solve it ?

As an addict it is vital that I get to play atleast 1 hour of minecraft everyday, pleeez halp!

Black screen (which usually closes after a few seconds) indicates a Java exception/error, either through mods or corrupted class files.
Try running it with a fresh minecraft.jar by deleting the minecraft.jar, version and md5s files. (Alternatively, rename the "bin" directory to "bin-backup" and it should redownload the binaries)

Lol I'm an idiot for not thinking of that...

Anyways I can play from the website now, but it gives me this error, when trying to play multiplayer on my pc:
"Can't connect to minecraft.net"

Any idea why ?

- oh and thanks

Could anything by any chance be blocking Minecraft? Firewall/Antivirus/Whatever. Slim chance, but might as well check.

No, I didn't install / edit any current programs whatever... It just suddenly happened (atleast I am 99% certain that I didn't ;P).

download minecraft again it worked for me

Sounds abit like what Pvt_OBrien reported, he has/had to redownload Minecraft everytime he wants to play.
Lurk around the IRC and talk to him when hes online, maybe you two have some running software in common which may interfere here.

Alright, though it's working fine from the website again - but locally no help in redownloading it sadly
- but alright thanks for the help

Check your Graphics drivers, or any drivers in general...
Would taking ownership of the folder help at all? No idea. Because redownloading each time sounds a little like a permissions issue.