Well i am trying to upload a page and every time the connection starts and uploading begins i get this error:

Response:421 Too many connections (2) from this IP
Error:Could not connect to server

after this error some time passes and the connection is established again uploads another 2-3 files and then boom error again... this thing stretched my upload time to 20-30 minutes so please help.

Zymic only allows 2 simultaneous connections from a single user - this is to prevent a single user using all of their bandwidth ect. Viewing the file directory counts as a connection.

It is possible to limit the number of transfers filezilla does in the settings. If you set this to 2 and then disconnect from viewing the server after queueing the uploads, this error will disappear.

no no no ... i have only filezilla running on the whole PC (i use a dev PC to make,update etc.) and i keep getting the error ... now i am in 2.4 hours of uploading :-w

How many files do you have in your upload queue?

EDIT:ok never mind it seems to have passed, everything working smoothly at the moment.