Pasteall does waste bandwidth

Not sure if this belongs to “technical” or “other software”; feel like technical.

If i try to upload blend files or images to Pasteall (using FF v32 here) page merrily shows flashdance of “Been busy” ring and then irritates with message “File could not be moved” on more occasions than i’d like to see not to speak about feelings about “moved” itself. I’m somehow assuming that what i do is trying to copy file from “here” to “over there”.

I have tried to a) rename file; b) move to different folder; c) delete cookie of Pasteall and load page again; d) delete cookie and restart FF. Sometimes file can be uploaded after this, sometimes nothing seem to help.

Upload speeds here are quite a bit limited and if file is 1 or 2 Mb process takes time (and bandwidth, i assume, since message appears after the same time as if the wile would be normally uploaded).

Has anyone seen the same happening and what could be the reason behind?
Thank you!