I tolerate this abomination because I love Logitech's mice and keyboards, but my patience is at the end of its rope. Just a few delightful points about LCC:

1. My trackball mouse randomly loses it's custom settings about once per week.

2. To set the custom settings, I must use Logitech's Device Manager. Device Manager crashes ALL THE TIME. As in, after every second or third customization. When it crashes, I cannot simply go back to System Preferences and launch it, no, I must quit and restart System Preferences, relaunch Device Manager, and get in a few customization settings. Then it crashes, and the ordeal repeats itself. I've added two new HDs to my Mac since I began using LCC, and with each one I did a clean install of OS X, followed ONLY by installing LCC, and in both cases, the problems with Device Manager persisted. I've been using Macs since 1991 and have never before encountered such crapware.

3. I cannot use USB Overdrive if I want to use a Logitech keyboard. I had my trackball acceleration curve set up perfectly for my carpal tunnel syndrome, but then I bought a Logitech Keyboard. Now LCC overrides USB Overdrive settings, but I must use LCC, or my Logitech keyboard is mapped out wrong. LCC needs an option to select only certain Logitech products to control.

4. LCC uses the unsupported hack, Application Enhancer (APE). That's right, a freakin' HACK, they couldn't be bothered to develop a real driver for OS X. Being unsupported, APE may cause system instability or other wierdness. Unsanity says no, it works great, but the folks at slashdot find APE more controversial. Regardless of whether it works well now, it is unsupported by Apple and it is inappropriate for a company like Logitech to resort to such a shortcut.

Unless Logitech gets LCC working at a subnormal level (far above it's current functionality), I cannot buy anymore Logitech products. It's too bad, because I've got nothing but praise for my Logitech mice and keyboard - the ergonomics help my CTS and at a great price. Please, Logitech, try hiring at least one full-time OS X driver developer.