Bucket Explorer is a nice tool and really evolves with every update. Congratulations.
I seem to have come across a reproducible bug: A rather large file (543 MB) is uploaded until the progress bar reaches the 100% mark. At this point the file does not appear in the object list of the bucket, instead Bucket Explorer begins to upload the same file again. This process repeats itself until I click "Cancel".
Below an excerpt from the log file.
17 Nov 2007 19:14:08,399 INFO bm Info : Calculating hash of the file :-LS - 2007-10-31.pst
17 Nov 2007 19:16:03,264 INFO bm Info : Calculated hash of the file :-LS - 2007-10-31.pst
17 Nov 2007 19:16:22,241 INFO bm Info : Uploading in progress
17 Nov 2007 20:53:31,984 INFO bm Info : Disconnected
17 Nov 2007 20:54:02,007 INFO bm Info : Reconnecting...
17 Nov 2007 20:54:02,278 INFO bm Info : Connected...
17 Nov 2007 22:47:16,567 INFO bm Info : Disconnected
17 Nov 2007 22:47:46,571 INFO bm Info : Reconnecting...
17 Nov 2007 22:47:46,831 INFO bm Info : Connected...
18 Nov 2007 00:21:03,779 INFO bm Info : Uploading canceled...Archive/EMAIL/LS - 2007-10-31.pst
18 Nov 2007 00:21:03,899 INFO bm Info : Uploaded-2 Not Uploaded(Identical)-0 Skipped-0 Failed-1
The cancel event above occured when Bucket Explorer had failed to add the file to the object listing and started to upload it again. At this point I interrupted the process.