Q: In OS rc1 release FreeCAD 0.18 loads slowly and FEM tools crash
A: See instructions how to purge old v0.17 profile workbenches

Q: pcb2gcode seems to crash the OS or not work at all
A: We have had to roll back the Beta OS to the v1.3.2 pcb2gcode snapshot version off Sourceforge with a statically compile boost_v1.68 due to an unresolved bug report. Also, the current release includes a sample testing script that shows lower-RAM-use values for the g-code drill, engrave, and cut-out.

Q: Flash or Youtube video/audio does not work in midori web browser
A: This is a complex pi2/3 kernel issue, but simply close midori and reload the browser again.

Q: Audio is noisy or not working
A: Right click the speaker, click properties, and select the proper output repair process.

Q: The RAM drive is only 80MB, so large log files or updates in "RO" mode can cause the system to run out of memory
A: Do not manually update the system while "RO" is active.

Q: RAM intensive compile jobs can't complete and run out of memory
A: We have already enabled a low-priority physical swap file in "/home/root/swap", and for some programs we must use "make" instead of the faster "make -j4"

Q: Is multitasking with LinuxCNC safe?
A: The RT kernels and watchdog timer can be very unforgiving of timing issues, and may reboot the machine if over-stressed. Thus, avoid doing other tasks while an RT application is running on a resource limited pi.

Q: the 32GB sdcard throws i/o errors at boot time
A: Newer releases assume a Class 10 / U1 / A1  microSD card can handle the >80MHz bus speed.  
The sdcard over-clock overlay can be edited in the /boot/config.txt file, and includes more information about why pi3B+ has this limit.
Q: the 32GB sdcard dumps screens of disk corruption errors at the boot time disk-scan screen
A: Some microSD cards like "SandDisk extreme plus" may not behave properly in older laptop sdcard slot adapters.  
To fix, Insert a more modern USB-to-microSD card adapter to write the disk image, eject and remove the whole adapter upon completion.