my media center pc had been working perfectly fine until about two weeks ago
when I went on vacation. When I came back yesterday, I found that it is no
longer able to download the guide and gives error 13.(The computer was
switched off during the vacation)

I know that the internet connection definitely exists. I am using it to
write this mail. Even the 'test internet connection' option in mediacenter
says that its working. i tried with and without firewall. i tried deleting
all the contents of the EPG directory.

I dont know what else I can do. Kindly help me. Thanks.