[CentOS] yum update in background

greetings,

is it a proper way and/or good idea to perform a yum update in the
background like this?

yum -y update &

at this moment, i do not have as reliable of an "wireless access connection"
to the remote server machine at the data center as i would like and i want
to take this one box from 4.1 to latest 4.2

comments please?

thanks!

 - rh

--
Robert Hanson - Abba Communications
Computer & Internet Services 
www.abbacomm.net