Thanks for the reply.
The problem that I described is not caused by speed. Speed was one of the symptoms that something was wrong with this host.
I know how to set the account, and it was done before, with no problems.
The problem is: with or without account, using or not using account, uloz fails to upload. Not with uloz, nor uloz2. I tried deleting all the upload list, re-uploading, adding again, but nothing. In the past, however, this kind of problem happened, and it was solved by clicking on re-upload selected file (f6) again. Now, not even that is working. No matter what I try, I cannot get uloz to work.
Can you repeat this problem there on your side? If not, how can it be fixed?