"Xubuntu LiveCD no longer available, ISO now larger than 700MB
Starting with 13.04, the Xubuntu images are larger than 700MB so they no longer
fit on traditional CDs. The decision has been voted 8-0 by the Xubuntu team
members and thanks to the extra space, some applications that were removed from
the default installation in Xubuntu 12.10 are now back by default (see below).
One of the reasons for this change is the 'amount of developer time currently
spent keeping the ISO small enough to fit on a CD'."
And . . .
Judging from troubles noted on various forums with any 12.10 'buntu, I would use the following version of xubuntu--
Link to download Xubuntu-12.04.3-alternate-amd64.iso-- http://mirror.anl.gov/pub/ubuntu-iso/CDs-Xubuntu/12.04/release/xubuntu-12.04.3-alternate-amd64.iso
SHA256 sum for the above-- 9a3251c27cf50a47856f9a865d61c6426f559457238c750cc3f249d4ae41ddb0
Suggest using Downthemall with Firefox to download the above, checking the SHA256 (as provided in pull-down window) as the integrity check for the iso downloaded; burn the iso to cd at no more tan 8-10X; run Unetbootin from command line and point to the iso burnt to cd to load the USB stick. At least you will have the iso to use later and/or as so desired.
OP will most likely do as he wishes, anyway, but this is my answer.