Ubuntu 12.04 Intrusive OS

I installed Ubuntu 12.04 on two laptops by now. and I must rant. Ubuntu developers are assuming two many things about me. First, there is this bug, which the'migration-assitant' mounts existing partitions in READ-WRITE mode. I find it dangerous and not necessary for migration.\ Then, today I installed Ubuntu 12.04 on IBM x121e and found out that my Bluetooth chip is disabled. After about 20 min of looking I discovered, it is because of a bug in the installer which messes around with the BIOS. So if you have IBM x120e with Intel Chipset, you need to reboot, restore the BIOS defaults and then Bluetooth works. \ That's all the ranting for now ...