Hi Vladimir! Could you please create sample (Mac OS X) or dump (Windows) file while freezing and send it to syncapp@bittorrent.com? If you are using Mac please run Activity Monitor, find Sync process and click on "Sample Process". If your OS is Windows please run procexp.exe (http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx), make right click on Sync process --> Create Dump --> Create Full Dump. Then attach created file to email and send us. Thanks!