Since update to 3.2 I see the following behaviour when doing file transfer:
When a user tries to transfer a file, but the recepient does not accept (because not taking care for a minute or two) the transfer fails. BUT when the want to start over again TWO file transfer requests get transmitted and even when accepting this time, transfer will fail.
Also something gets screwed up, as ever further text im from the recepient to the sender gets bounced back twice and it looks like the other party simply typed the exact same IM twice. (? IM Echo!)
File transfer in the other direction does work perfectly! Both use Spark 2.0.8 but connect to the server from different subnets, the server is multihomed.