I have a very strange problem.
RPMs become corrupted when downloading them with ftp or http under Fedora
Core 4 and 5 (different partitions, same box). They are not corrupte when
downloading with http under Windows XP (also same box). I have tried many
mirrors, including download.fedora.redhat.com
The RPMs fail the rpm -K check and their md5sum is wrong. Only some RPMs
fail, however. Some are always good, some are sometimes good, and some
always fail. I cannot find a clear pattern.
However, the RPMs are fine if I download them with scp, and also seem to
download fine if I gzip or rename them to something not with the .rpm
suffix.
The Core 5 partition is a new, clean install. The Core4 partition has
not been updated in quite a while, but used to update fine earlier.
Doing cmp -l on the RPMs that are corrupted against good versions shows
one of the two bytes 317 377 or 337 377 as differences at various
positions in the RPMs. Usually each corrupt RPM only has one of these, and
always at the same position for the same RPM through multiple redownloads.
In one case I noticed one RPM getting an additional byte pair after a
redownload but that was gone at the next redownload.
It looks like this:
[perrin@localhost ~]$ rpm -K procps-3.2.6-3.3.i386.rpm
procps-3.2.6-3.3.i386.rpm: (SHA1) DSA SHA1 MD5 GPG NOT OK
[perrin@localhost new]$ cmp -l procps-3.2.6-3.3.i386.rpm
/mnt/l/rpms/procps-3.2.6-3.3.i386.rpm
5333 317 377
[perrin@localhost new]$ cmp -l gedit-2.14.2-1.fc5.1.i386.rpm
/mnt/l/rpms/gedit-2.14.2-1.fc5.1.i386.rpm
22089 337 377
22453 337 377
2790177 337 377
So far I've this is what I have tried after helpful suggestions from
people in #fedora on freenode:
- memtest86 for several hours
- changing MTU on my network interface
- rebooting my ADSL router
- checking ifconfig for errors or collisions
- rpm -Va and a rootkit detector
- rpm --import /etc/pki/rpm-gpg/*
None of this fixed the problem or showed anything suspicious.
I tried to unpack the RPMs using rpm2cpio to find what files
were changed, but found no changes in files in the checked RPMs.
Any ideas on what else I can try to figure this out, please? Thanks a lot
for any help.
- Per
