Look at this. Almost all shares are rejected by your pool using phoenix.
There should be no difference in rejected ratio between phoenix and poclbm, so it sounds weird. Are you using api.bitcoin.cz or api2.bitcoin.cz? If api.bitcoin.cz is the problem still here, even after restart which I did before moment?
I'm using api.bitcoin.cz. Here are the commandlines I'm using:
poclbm:
poclbm.py -d 0 -w 256 -v -f 1 "user:pass@api.bitcoin.cz:8332"
phoenix:
./phoenix.py -u "http://user:pass@api.bitcoin.cz:8332" DEVICE=0 BFI_INT WORKSIZE=256 VECTORS AGGRESSION=11 FASTLOOP=false -k phatk
The strange thing is, that if I point all my GPU's to your pool, only some GPU's experiencing the *high* reject ratio. And sometimes it's better, and sometimes worser. For instance, yesterday before things get really wired, only two of my miners there getting higher reject ratios. The other 8 there running quite smooth. Later things get worse... (read my yesterday posts).
Using cgminer I have the same problems with your pool. Only poclbm works stable. Other pools are perfect no matter with miner software I'm using. It's something special with your pool.
Can you give a hint, WHY these shares get rejected?
BTW... today phoenix using api2 seems to work. For one hour no problems so far.