ORDER BY statement inside a REPORT

I have Informix 7.10 Online Server and Informix 6.04 4GL running on a Unisys 6000-500/50 SMP server with two Pentiums. When I issue an ORDER BY inside a REPORT, because I want the rows to be ordered inside the report, I experience the follwing problem. I have A FIRST PAGE HEADER statement with n rows, a PAGE HEADER statement with m rows while pages are changed with SKIP TO TOP OF PAGE statements. In the second page the internal LINENO does not calculate correctly the line number after the PAGE HEADER rows, resulting to an incorrect page change to the third page. This happens either with explicit declaration of the page length in rows (66) or with changing pages with ^L. Any help is appreciated. I can also send by e-mail a test .4gl for this (bug in my opinion). Thanks Panos