Plagued by xxxx not responding error messages for at least 3 years with my iMAC every time I try to print from any app (pages, numbers, pdf, etc.). I've responded to the query every time and NEVER received any feedback from Apple. I've tried reloading the Operating System to no avail. I've cleared cache, I've dumped cookies, I've done a repair disk, I've tried several other suggestions to no avail. The only thing that has worked is to turn the computer off then back on (and that does not always work the first time). I have noted that I am not the only user with this problem but Apple seems not to care so from a problem annoyance standpoint it must not have crossed a threshold for them to care. HIGHLY FRUSTRATED!