[CentOS] yum upgrade of an older 6.1

i fired up a vm i haven't used in ages, it was centos 6.1, so I ran yum 
update -y, and it bombed on package conflicts with matahari and 
qpid-something...    I had no need for matahari (heck, I don't even know 
what it is), so I removed matahari-\* and the yum update succeeded, but 
shouldn't yum update be able to update ANY centos 6 to latest ?    this 
system has NO extra repos, just CentOS-Base etc.




-- 
john r pierce, recycling bits in santa cruz