I've had this keyboard ever since my previous one failed (due to a combination of orange juice and some not-so-pure H2O), I am generally happy with it, except this:

The function lock, when off, turns all the function keys into special purpose keys that I never use. Worse yet, the lock is off by default and there is no way to make it stay on across power cycle. So for the past 2 years I've been manually (since there's no way to toggle the function lock programmably) switching the lock on, still I usually begin my day hitting my function keys couple times and wonder why they don't do what they are supposed to do.

Today I finally decided to figure out a way to stop this madness. Turns out you can fool Linux into thinking that those special purpose keys are the same as the function keys. See Solution for F-lock. I had to modify the setkeycodes line for my keyboard to:

setkeycodes e03b 59 e03c 60 e03d 61 e03e 62 e010 63 e019 64 e022 65 e024 66 e043 67 e044 68 e057 87 e058 88

Otherwise F5-F8 wouldn't work. Now I will be able to save 2 seconds every day for the next 2 years! (My previous keyboard lasted about 4 years)