well well well, i'm not the only one, i found this at blitzcoder, this guy had the same problem, i think its a bug of blitzbasic, time to move this to the bugs forum.
http://www.blitzcoder.com/cgi-bin/ubb-cgi/postdisplay.cgi?forum=Forum6&topic=000838
http://www.blitzcoder.com/cgi-bin/ubb-cgi/postdisplay.cgi?forum=Forum6&topic=000838