IDE 4.6.1 under Windows or Linux.

Grab around 50 files from the C/C++ project view, drag them in the TFSN.   The list of files appears in the progress 
view but then the IDE freeze for a very long time.  Frooze for 115 secondes for a transfer of 65Meg over a 100Mbits link
.

A co worker under Windows had to forcefully terminated the IDE because it seemed to be frozen forever.