Extremely slow USB to USB transfer

[Jingles]

I am having similar problems. I am running beta 2 and I have disable the auto mount feature in favour of fstab with the options 'defaults' (i.e. inc. async).

I am trying to copy a file at the minute, which is 1.3GB. I'm using rsync to copy from one from a 1TB drive to a flash drive. The copy starts off at ~5MB/s but very quickly drops to <150kB/s! Every know and then it does go back up to around 400MB/s but then drops again.

I have noticed that the timer you get when using the -P flag with rsync doesn't seem to change. The % copied, speed and time left seem to jump rather than continuously tick.

This only seems to have happened since putting beta 2 on. Despite the troubles (there were many!) I was having with beta 1 file transfer like this remained around 4-5MB/s.

Put simply this is driving me crazy! Help!