I've an old HP Vectra 420VL, once a "small form factory" machine, but of which all except the CPU and CPU cooler is not replaced) with a P4 of 1.6 GHz, 1 GB RAM and a 64-bit RadeonHD 3650 (AGP). It works well - except for Flash, version 11.8. Sound is fine, but the video. Goes. So. Slow. I see the Firefox/Palemoon executable and plugin-container.exe both hovering around 50% I tried upgrading the 64-bit Radeon, but the two (non-64 bit) videoards that I have make the PC beep like there's not tomorrow (anyone knows why? BIOS too old?) As I see it, Flash is rubbish. It is the only thing that goes slow on this old machine.