Pro add-on: is it working properly?

[#1]

Just out of interest how can you check things are downloading at line speed?

[#2]

This is the easy way - the free version - http://www.rokario.com/products/bandmon/2-0/

[#3]

Further to OldJim's comment above, im not a huge fan of bandwidth monitor 2, This is what i use and its *free* for everything that BM2 does in the "pro" version I believe (certainly click through features etc.)
Networx does tend to wander off screen sometimes, but a quick click of the systray icon brings it back -- this can also be used over multiple machines to aggregate data used.
Regards