ipkg install xfwm4
Installing xfwm4 (4.4.1-r1) to root...
Downloading http://www.angstrom-distribution.org/unstable/feed/armv5te/base/xfwm4_4.4.1-r1_armv5te.ipk
xsystem: ERROR: fork failed before execution: `wget --passive-ftp    -q -P /tmp/ipkg-pR29w3 http://www.angstrom-distribution.org/unstable/feed/armv5te/base/xfwm4_4.4.1-r1_armv5te.ipk'
Nothing to be done
An error ocurred, return value: 22.
Collected errors: