Problem with vi editor

[Ravi R.S]

Hi,
I have an C++ application running on my linux machine. This application logs
all the information to a log file named trace.log. When I open this
trace.log with vi editor(redhat linux kernel 2.6) and save during when the
application is running and edit it, the application stops logging to the
file no more logs are logged into the trace.log file even the application is
running. Why this behaviour?

But this is not the case in the Debian linux. Even after editing the log
file, it still continues to log after saving it.

Can somebody give pointers on this. Your comments will be appriciated.

Regds,
Rav
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