Image UPLOAD is not working with opera

CCK version -- 6.x-2.6
imagefield version -- 6.x-3.3
permissions for your tmp and files directory. -- 654
public Download
imagefield configuration -- N/A
expected results -- Image should be upload from opera too
the unexpected actual results -- Not getting any result

When i try to upload image from opera it is not working .
- able to select imaage
- clicking on upload button will disable the upload button and the progress icon is appear.
- stuck somewhere here nothing is happening further.