ports/179044: Corrupted portsnap archive

[Saenara]

>Number:         179044
>Category:       ports
>Synopsis:       Corrupted portsnap archive
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue May 28 09:50:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Saenara
>Release:        FreeBSD 9.1-RELEASE-p3 amd64
>Organization:
Oleg Yevdokimov
>Environment:
System: FreeBSD foggy.internetband.ru 9.1-RELEASE-p3 FreeBSD 9.1-RELEASE-p3 #0: Mon Apr 29 18:27:25 UTC 2013 root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64

>Description:
Fresh FreeBSD 9.1 amd64 installation, right after successfull freebsd-update fetch && freebsd-update install && reboot.
Tryng to fetch ports with portsnap:

---
root at foggy:/root # portsnap --debug fetch
Looking up portsnap.FreeBSD.org mirrors... 6 mirrors found.
pub.ssl                                       100% of  451  B 3972 kBps
done.
Fetching snapshot tag from ec2-eu-west-1.portsnap.freebsd.org... 
snapshot.ssl                                  100% of  256  B 1852 kBps
done.
Fetching snapshot metadata... 
7719e39e7b7751c91689858400a3a514488a0d852d194b100% of  527  B 2973 kBps
done.
Fetching snapshot generated at Tue May 28 04:03:52 MSK 2013:
7719e39e7b7751c91689858400a3a514488a0d852d194b100% of   12 MB  930 kBps 00m00s
Extracting snapshot... snap/5746330c5766f9956e0f8314736b070291076d03388b95d7976f35dd17dc6f19.gz: (Empty error message)
tar: Error exit delayed from previous errors.
root at foggy:/root # tar -tzf /var/db/portsnap/7719e39e7b7751c91689858400a3a514488a0d852d194ba42e7d4f8aad8311d1.tgz  > /dev/null
tar: Truncated input file (needed 3072 bytes, only 0 available)
tar: Error exit delayed from previous errors.
---

Problem persists at least two days. But updating already fetched and extracted ports always successful.
	
>How-To-Repeat:
Download FreeBSD-9.1-RELEASE-amd64-disc1.iso from freebsd.org.
Install system with completely default settings.
Run freebsd-update fetch && freebsd-update install && reboot.
Run portsnap fetch.
Enjoy :-)

	
>Fix:
Don't know.
	


>Release-Note:
>Audit-Trail:
>Unformatted: