Comparing with Zephyroth 10.5.1 Rev.1 on my hardware I'll give rate of 2.
10.5.1 was very smooth to install, then add drivers and got almost fully working system.
With 10.5.2 Rev.2 (and Rev.1 too) the installer doesn't recognize my IDE HDD, so I have to install on SATA in AHCI mode
Included drivers doesn't work at all, ant the old ones that used to work on my 10.5.1 doesn't provide full functionality.
Problems worth to mention are - no DVI from graphic card, mount problems with DVD's, not working DNS client.
May be this all can be solved, but surely with 10.5.1 I had none of this.

Specs:
Athlon64 X2 4200+
ASUS M2A-VM HDMI
RAM 2 GB
Video ATI Radeon HD2600XT 512Mb
SATA DVD-drive Pioneer DVR-212D
SATA HDD's 160Gb Maxtor + 500Gb Samsung
IDE HDD 80Gb WD
Network Realtek 8111 integrated
Sound ALC883