>>Thanks, Sergey. I guess, it's not a big of a deal if some information would not end up in the log. I don't think this situation would ever occur.
>>
>
>Are you using STRTOFILE() in append mode?

Yes.

*-- Writes to logfile
	procedure WriteToLogfile
	lparameters tcstring, tlNoTime
	if m.tlNoTime
		=strtofile(m.tcstring + CRLF, this.cLogFileDir + this.cLogFile, 1)
	else
		=strtofile(ttoc(datetime()) + " " + ;
			m.tcstring + CRLF, this.cLogFileDir + this.cLogFile, 1)
	endif
	endproc

I may try to change this code to do it in cycle. Do you think it's necessary?

Well, reading Help helps <g>

Unlike earlier versions of Visual FoxPro, STRTOFILE( ) opens a file in Shared rather than Exclusive mode. This is useful when multiple servers attempt to simultaneously write to the same file. Because of this change, you might not need to check for STRTOFILE( ) to return 0 (failure to open a file).

I also made a change to use just one line of code with iif rather than if/else/endif