Guys do you have any idea why this is happening?

[2014-04-19 00:09:47.221] 1: rejected 33/45 (73.33%) 219.4/2208.6 KH/s
[2014-04-19 00:09:47.221] DEBUG: reject reason: low difficulty share of 0
[2014-04-19 00:10:5.168] 7@4 850MHz: Got nonce cd096459, Hash <= Htarget!
[2014-04-19 00:10:5.168] 7@4: 544s until frequency adjusts to 875MHz
[2014-04-19 00:10:5.207] 7: rejected 33/46 (71.74%) 144.6/2280.7 KH/s
[2014-04-19 00:10:5.208] DEBUG: reject reason: low difficulty share of 0

Itried different pools:
- waffle: worked in the beginning, not anymore DEBUG: reject reason: low difficulty share of 0
- Clevermining: now working after last FW update (v3d)  DEBUG: reject reason: low difficulty share of 0
- LTC: 100% rejects (DEBUG: reject reason: high-hash)
- Doge: not working

First 12hrs it wokrd very well with Waffle pool
i even tried setting diff with entering "d=512" for password with waffle, but i cant seem to make it work. Suddenly I'm getting a ton of rejects (>50%) and very low HR (1600kH for 10 miners)
Settings:
General freq: 850
Auto overclicking
Using LA controller


The other 10 miners are still on LA controler version 1.0 and working OKayish on 850Mhz (10 miners @ 3300-3400 Kh).

Any ideas appreciated!