Newsgroups: comp.binaries.ibm.pc.d
Path: utzoo!utgpu!jarvis.csri.toronto.edu!me!rwh
From: rwh@me.utoronto.ca (Russell Herman)
Subject: Re: Telix and file transfers
Message-ID: <89Apr25.225050edt.19728@me.utoronto.ca>
Organization: U of T Mechanical Engineering
References: <8904252002.AA01622@decwrl.dec.com>
Date: Tue, 25 Apr 89 22:50:38 EDT

I had similar problems, and the solution may be relevant to you as well.
Use "-l 1024" in your SZ calls.  I suspect the problem relates to not
doing flow-control in realtime when connected over a network (in my case,
a T1 link).