In Lite 4.0.3 ($ rpm -qa xf\*
xf86dga-1.0.2-alt1
xfce4-cpufreq-plugin-0.0.1-alt1
xfce4-mixer-4.4.0-alt0.1
xfce4-session-4.4.0-alt0.M40.0.1
xfdesktop-4.4.0-alt0.1
xfce-settings-lite-office-superlite-1.0-alt1.M40.1
xfsprogs-2.8.16-alt1
xfcalendar-4.4.0-alt0.1
xfce4-diskperf-plugin-2.1.0-alt1
xfce4-notes-plugin-1.4.1-alt1
xfce4-systemload-plugin-0.4.2-alt1
xfontsel-1.0.2-alt1
xfce-settings-lite-1.0-alt1.M40.1
xfce-mcs-plugins-4.4.0-alt0.1
xfce4-cellmodem-plugin-0.0.5-alt1
xfce4-dict-plugin-0.2.1-alt1
xfce4-icon-theme-4.4.0-alt0.1
xfce4-mpc-plugin-0.3.0-alt1
xfce4-screenshooter-plugin-1.0.0-alt1
xfce4-smartbookmark-plugin-0.4.2-alt1
xfce4-weather-plugin-0.5.99.1-alt1
xfwm4-4.4.0-alt0.1
xfce-settings-lite-network-1.0-alt1.M40.1
xfce4-themes-builtin-2.4.0-alt0.2
xfce-mcs-manager-4.4.0-alt0.1
xfce4-battery-plugin-0.4.90.3-alt1
xfce4-datetime-plugin-0.4.1-alt1
xfce4-genmon-plugin-3.0-alt1
xfce4-mount-plugin-0.4.7-alt1
xfce4-radio-plugin-0.2.0-alt1
xfce4-session-engines-4.4.0-alt0.M40.0.1
xfce4-timer-plugin-0.5.1-alt1
xfprint-4.4.0-alt0.1
xfce4-minimal-4.2-alt1
xfce-settings-lite-office-lite-1.0-alt1.M40.1
xfburn-0.3.0.svn20070826-alt2
xfce4-appfinder-4.4.0-alt0.1
xfce4-eyes-plugin-4.3.99.1-alt1
xfce4-quicklauncher-plugin-1.9.2-alt1
xfce4-taskmanager-0.3.2-alt1
xfce-utils-4.4.0-alt0.M40.2
xfce4-xmms-plugin-0.5.1-alt1
xfce4-panel-4.4.0-alt0.2
xfce4-clipman-plugin-0.8.0-alt1
xfce4-mailwatch-plugin-1.0.1-alt1
xfce4-sensors-plugin-0.10.0-alt1
xfce4-xkb-plugin-0.4.1-alt1
$ 
), there is a memory leak in xfce. 

How to reproduce: leave an Xfce session for several days (7--10 days).

Result: the physical memory (256Mb) is full, the swap is almost full. After exiting Xfce, and logging in through xdm again, the memory is almost free (is used just a little).

Expected: memory doesn't leak.