In your alpha 1 (using the u8150 kernel), was graphics flickering on your phone?
In alpha 2+ you are using my kernel (u8160 kernel)... you do see the flickering with this, yes?
Please let me know if yo see a difference in graphics between the kernel version (I don't own an Ideos, so I can't test the u8150 kernel).
Samsung Galaxy 5 (GT-I5500): CM10.1
Vodafone Smart (Huawei U8160): CM9