help

[Soodeh Peyvandi]

Hello Sir/Madam
I m Soodeh,PhD student in UTP(Malaysia)

I want to install boinc server on my laptop
but I can not
I used from this link:http://mozilla.debian.net/

i faced with this error:
E: Release file expired, ignoring
http://mirror.nus.edu.sg/Debian/dists/squeeze-updates/Release (invalid
since 19d 1h 31min 6s)


Can you help to me for solving this problem?

So thanks
Best Regards
Soodeh
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