I've installed 4.0 pre-alpha on to a brand-new Dell and taken a local
copy of 40rolling with:

rsync -av --delete
www.mirrorservice.org::ftp.scientificlinux.org/linux/scientific/40rolling/i386 40rolling/

I'm now unsuccessfully trying to use yum to upgrade. Since this is the
first time I've used yum it's as likely that I'm doing something wrong
as it is to be an SL problem.

yum update yum is fine, but yum upgrade gives me a whole load of
OK-looking output ending with:


---> Package mozilla.i386 37:1.7.6-1.4.1 set to be updated
---> Package tetex-fonts.i386 0:2.0.2-22.EL4.4 set to be updated
--> Running transaction check
--> Processing Dependency: libcom_err.so.3 for package: squid
--> Finished Dependency Resolution
Error: Missing Dependency: libcom_err.so.3 is needed by package squid

Am I doing something wrong or is it a 4.0/yum problem?

FWIW, sl.repo and sl-errata.repo are:

[main]
[sl-base]
name=SL 4 base
baseurl=file:///nfs/SL/40rolling/$basearch/SL/RPMS/
#baseurl=ftp://ftp.scientificlinux.org/linux/scientific/$releasever/$basearch/SL/RPMS/
enabled=1

[main]
[sl-errata]
name=SL 4 base
baseurl=file:///nfs/SL/40rolling/$basearch/errata/SL/RPMS/
#baseurl=ftp://ftp.scientificlinux.org/linux/scientific/$releasever/$basearch/errata/SL/RPMS/
enabled=1

and both directories exist and are full of rpms.

Thanks

John