transmission gets really slow and turns black and white after a couple hours of downloading

Binary package hint: transmission

the laptop gets HOT after some time so first i thought it is overheating. but everything else works perfect after i close transmission. even the heavy compiz effects work very smoothly and all applications are highly responsive. is it possible this is a bug in transmission?

ProblemType: Bug
Architecture: i386
Date: Tue Mar 30 21:08:00 2010
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/transmission
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Package: transmission-gtk 1.75-0ubuntu2.2
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-20.58-generic
SourcePackage: transmission
Uname: Linux 2.6.31-20-generic i686
XsessionErrors:
 (gnome-settings-daemon:1561): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:1561): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (polkit-gnome-authentication-agent-1:1684): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:1667): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (gnome-panel:1664): Gdk-WARNING **: /build/buildd/gtk+2.0-2.18.3/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window