Hi,

thanks a lot for the information.

FF was so fast because it switched, like you said, to html5, but if I set the uploader type only to flash then FF isn't faster than IE.

The problem seems to be the HTTPS connection + Flash. If I use only http then the full bandwidth is used, but with https IE and FF with Flash are slow.

Here is the debug output.

INFO ScriptVersion ,20121113-01
INFO UploadType/addontype,Flash/Flash
BEGIN event initialize
END event initialize
INFO set flash load mode for SSL
BEGIN event browse
END event browse,true
BEGIN event flash select
END event flash select,true
BEGIN event start
END event start
BEGIN event taskstart,{7z465.exe:939956}
END event taskstart
INFO InitFrame
INFO UploadURL ,pp.aspx?UploaderDebug=1&UseUploadModule=Dynamic&_Namespace=CuteWebUI&_UploaderDebugMode=1&_UploadID=body_AjaxUploadImage_1355328665451_1&_UploadControlID=ctl00$body$AjaxUpload&ContextValue=!3wEWAQUTYzpcRmlsZXNcVXBsb2FkVGVtcFK3UNKZ0du!3fPWVUgyXoo1tHSf6k0oIddPPpDLbZkte&_MaxSizeKB=1953125&_VFN=7z465.exe&_Addon=upload&_AddonGuid=86B79AE7-A63C-631B-BD4B-A5E70B29FBFF
INFO flash report ,complete,86B79AE7-A63C-631B-BD4B-A5E70B29FBFF,,
INFO flash start load mode ,939956
INFO flash finish load mode ,939956
INFO submit form via xmlhttp ,https://pp.aspx?UploaderDebug=1&UseUploadModule=Dynamic&_Namespace=CuteWebUI&_UploaderDebugMode=1&_UploadID=body_AjaxUploadImage_1355328665451_1&_UploadControlID=ctl00$body$AjaxUpload&ContextValue=!3wEWAQUTYzpcRmlsZXNcVXBsb2FkVGVtcFK3UNKZ0du!3fPWVUgyXoo1tHSf6k0oIddPPpDLbZkte&_MaxSizeKB=1953125&_VFN=7z465.exe&_Addon=verify&_AddonGuid=86B79AE7-A63C-631B-BD4B-A5E70B29FBFF
INFO get http status,200
INFO UploadOK,body_AjaxUploadImage_1355328665451_1,86b79ae7-a63c-631b-bd4b-a5e70b29fbff,,7z465.exe
BEGIN event taskcomplete
End event taskcomplete
BEGIN event postback
END event postback,false

Is there any workaround?

Best regards

Mark