http://www.zwsoft.com/forum/viewthread.php?tid=2491 Hi everybody I´m using the ZWCAD 2011 Professional. I have got problems with the blinking (disapearing, flashing) cursor while i move with it. It is quite uncomfortable and my eyes get tired much more quickly. I tried to update my graphical card driver, but nothing helped. Thanks a lot for yout advices and informations My computer configuration is: CPU - Intel i3 530 2.93GHz RAM - 8GB Graphic - NVIDIA Quadro FX 580, 512MB Mainboard - Gigabyte H55M-USB3 Windows 7 64bit Sesse 2012-10-31 15:34:35 http://www.zwsoft.com/forum/viewthread.php?tid=2491&pid=16195 Hi, some little blinking of cursor is normal, if you really feel it has big effect on you, you may try to set your screen's refresh rate higher. Thank you. huangy8949 2012-11-02 09:14:16