Could Not Login to Skype

Skype is the one I've been using to make internet calls. It really helps me communicating easier to my clients. Yesterday, I got problems logging in to it. I know I am entering the correct Skype name and password. It didn't give me an error and it just goes back to the login screen not displaying any error.
I tried rebooting my pc to see if that could help but it didn't work. My OS is Windows 7 and working fine with Skype until yesterday. For the meantime I am using a different instant messenger program.
If someone knows a fix, feel free to put your suggestions here.
