She brought it over for help today. Turned out to be simple stuff but I sense a trend.
I took the opportunity to run one of my quick XviD encoding benchmarks against some old results:
System/Minutes:seconds
-----------------------------
Desktop AMD A64 754 3000 (@ 2000MHz)/2:23
Desktop AMD XP 2500 (@ 1833MHz)/3:00
Acer 5002 Turion ML-30 (@ 1600MHz)/3:08
Laptop HP ze5170 P4 2GHz (@ 2000MHz)/4:07
Not exactly blazing but enough for Office.