I ordered myself a new CPU cooler from ebuyer a couple of days ago, and it arrived today. It's a Scythe Mine, link http://www.scythe-usa.com/product/cpu/025/scmn1100.html
Pre-upgrade with stock stats:
Ambient 22°C
0% Load
~1200rpm, 38°C
100% Load
~1980rpm, 52°
Post-upgrade:
Ambient 23°C
0% CPU http://spikey-richie.co.uk/temp/zero_cpu.jpg
100% CPU http://spikey-richie.co.uk/temp/full_cpu.jpg
This thing is HUGE though. Install pics to come once I find my 'phone USB lead.