To end the

"discussion" about the Raspberry Pi and COPS:
- first I "dynamically overclocked" the Raspberry Pi from 700 to 900 Mhz
- second I installed APC
The overall effect is that the Raspberry Pi with COPS now feels "snappier".
@vlad59:
I found the topic (outside mobileread) you mentioned and ran some of the "benchmarks".
The Tonidoplug2 (armv5 @800 Mhz) was marginally faster than the Raspberry Pi (armv6 @900 Mhz). Comparing the 2 in real life with COPS mostly confirms this. However the network throughput of the Tonidoplug2 is much (3x) faster, which in turn makes it possible to serve the covers faster, so it overall feels faster as well. The same is true for my Synology.
If I would link the Raspberry Pi to the internet as a home-webserver for COPS (and other stuff) it would be fast enough as my uplink speed (max 15 megabits/sec) will be the bottleneck rather than the Raspberry Pi.
Now back on topic before I get a