Grabbed a TBB Meter pic for diagnosis. What do you think?

Is this what you'd consider a healthy line?

The reason I ask this is because although on the graph its showing my speed spiking up to 4meg-ish, I am still having trouble playing games online.
Shouldn't it be showing solid green? I am currently downloading a game update and its taking forever!

Many thanks in advance for responding to this basic post.

[IMG]http://i43.tinypic.com/2vxhg6r.jpg[/IMG]

The place you are downloading the update from may have very variable capacity, particularly if millions of others are trying to get the same download.

NOTE: If trying to still play games while the update is happening I would expect the gaming experience to not be good.

The small spikes up to 4 Mbps from the flat 3.5 Mbps are probably just effects of the network card/av software.

Thank you very much MrSaffron for your informative and rapid reply, it's very much appreciated!