cannot install from CD

if i try to install software from my cd, i have 3 and they all act the same, sooner or later XP will say it cannot find a file, usually a .cab file. - the file exists.

if i copy the cd to my hard drive the install goes perfectly.

happened on XP Plus, Norton SystemWorks to name a couple.

all my cd's are scsi, is it that or is it XP.

any opinion welcomed