Image download speed

Hi there,

We have a number of images of different sizes.
There is one particular image which download at a normal speed to about 50% and then the last 50% completes in about 2 seconds.
The machine appears to build fine afterwards and there do not appear to be problems.
I am just curious at this stage as to why this would be happening?

I know if could depend of number of files and size of files etc, lots of small files but I do not see this with other images?

We are running ZCM 11.2.3.a and I am about to update with the October 2013 Image driver set.

Thanks
Mark