I just found that some yahoo mail accounts with 6mb storage have not been upgraded however if you change the language settings of your account to English – US than you get the upgrade ,isn’t this strange ?
and what about the pop access who can use it for free it is available in the yahoo.co.uk accounts but not in the yahoo.com accounts is it also available for other regional accounts and cant the free pop access be used with yahoo.com account ?
see this
http://yahoo.weblogsinc.com/entry/5068632431817386/
I had a yahoo.com account with no upgrade of storage ,it worked for me