Replying to both questions about my bad experiences:
One of my first work laptops was a handed-down lenovo, so that may or may not have been lenovos fault... However the person doing the handing down was certain not buying a new lenovo. It performed ok, but never anything stellar.
It had a lot of weird quirks - it would suddenly flip it's CapsLock state, so i'd need to turn it on to shut it off. It would stay like that till I rebooted.
Eventually, the red button died... but it didn't just die, it forcibly dragged my mouse to the bottom of the screen. I had to fight with the thing to find the option to disable the button in the control panel before I could regain control of the computer. Plugging in an external mouse didn't help, the red button overrode all mouse commands.
Finally ,the thing all but gave out on me. I got a 2nd hand me down laptop, a Dell, before finally getting a real PC to work from.
That was my old job...
This current job, I have a T410, and I hate the thing. Everyone here has the same laptop (one guy has a slightly better model, but he hates his as well). They lock up, they have poor performance, they come with worthless bloatware, things fail for no reason... it goes on and on. Here are some examples:
Performance: It came with 4GBs of RAM. My old Dell had 4GBs, and I could keep 2-3 Visual Studios open at a time, no problem. This thing struggled to keep a single instance open. Keeping 2 open, damn near unusable. It would routinely take me 40-50 seconds to switch applications around (this is not an exaggeration. It would lock up and become unresponsive for a number of reasons, mainly switching between applications). For a developer, this is killer.
Sometimes while typing, the USB port my keyboard is attached to will die. Sometimes redocking fixes this. Sometimes I need to reboot.
Same thing for my bluetooth mouse. Sometimes I can pull the nub out and re-insert it and fix the problem, other times I have to reboot. Unlike the keyboard, the bluetooth nub stays with the laptop itself, so it isn't just that the dock has issues (Although it could... it was made by Lenovo)
Speaking of undocking, sometimes the screen goes dark, and never comes back. Other times, when I redock it, it's forgotten the video settings. Occasionally, it will only partially forget them, and turn on one of the 2 external monitors. I'd say I need to fix the monitor setup atleast 2-3 times per week.
Sometimes when it goes to sleep, it can't wake up.
When it isn't docked, and I'm using the built in screen, the color pallet gets off-kilter, and there is massive dithering over wide portions of the screen. Whole swaths of things get dithered, with green and red dots filling in the blanks. The severity of this seems to change day to day - sometimes it's fine, sometimes it's the entire screen, sometimes it's just a portion...
This isn't just my issue, mind you - Every single person in our team has these laptops, and experiences these issues.
ThinkPads used to be great, when IBM owned the brand. They were rock solid tanks.
Lenovo destroyed the name and the quality.
If I never use another Lenovo for as long as I live, I could die a happy man