I'd just like to report that the forestry backpacks have serious inventory shortcut problems.
Shortcuts like L-Shift + click, Space + click, and L-Shift + W + Click can cause eternal loops, which make the game freeze.
"Memory connection overburdened. 2500 packets processed, #### packets to go" and this number keeps on getting higher and higher.
I don't really know where to report this, as it is clearly something only the Forestry creators can fix.
Besides, Redpower project tables have similar issues.