[tde-devels] copying big files inside 32 bit konqueror

Hi all! I compiled tde 14.0.12 on 32 bit slackware (mostly 15.0, but actually upgraded from much earlier versions) via Ray-V Slackbuilds and desktop works ok. But today I tried to copy 4.3 gb file from my home dir open in one konqueror tab into media/sdc1 (newly inserted usb flash drive) open in another tab, by selecting two files, and then selecting 'copy' from their context menu, and then switching tab and pasting files there. I was surprized to see error on bigger file, one with 4.3 GB in size, while smaller file (2GB) copied ok. I copied bigger file with mc ok. I wonder if this behaviour just comes from miscompilation (missing LARGEFILE_SOURCE ? ) or issue might be deeper ?