bigbadasian- That is not junk mail, those are viruses.
Here is what happened. One of my friends go the virus. Then the virus will get into your email and remail it's self out over and ove again. So if you get the virus, that virus will be sent out with out you knowing about it, to all your firends or people you have hade email contact with before. So people will recoginize the email address and just assume it is you sending out a email to them and then they will open the attachment and then they will have it. Then the cycle starts all over again.
This is what happened to me, my firend sent me a email that said A DOCUMENT ABOUT YOU, so I just opened the attachment and bam I got it. This really screwed up my computer, it got into all my files, and spread all though my music files. I got ride of it, but then I got it again. So I just threw the whole pc out the window (not really) and baught a whole new system. It was time for it anyway.
Or it could be that your one year subscription to that email is up and you no longer have the protection that the email account offers to paying customers, so they cut your protection but let you keep the account. If you pay the fee again then it should start blocking out the junk mail again.