From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.0; Windows 98; DigExt)
Description of problem:
FTP installation crashes after retrieving netstg1.img
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Boot off bootnet.img floppy
2.enter network details and FTP server
3.Installer retrieves netstg1.img and crashes.
Actual Results: Installer crashed and hung
Expected Results: Install redhat.
I would recommend trying a different mirror. Also, 7.3 has just been released so
you may want to try it instead.