I also faced this issue. The captchas in Ubuntu software center are absolutely hard to crack. You can try creating account thru browser. It seems we get easier captchas in the browser.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ubuntuone-client-data in Ubuntu. https://bugs.launchpad.net/bugs/1319626 Title: Ubuntu One Captcha too hard to enter correctly Status in “ubuntuone-client-data” package in Ubuntu: Confirmed Bug description: I tried to create a new Ubuntu One while setting up the Sofware Center "suggested apps" (which required an Ubuntu One account) and ended frustated. The Captcha is really hard, I gave up on the account creation after 10 tries, I'm a male on my twentys with normal vision and could not decipher the Captcha. Not even 4***.org captchas gives me troubles as those on the Ubuntu One register page. I suggest to improve the captchas so they're not so difficult to read, I can just imagie my dad would just close that window if he saw such a hard captcha. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: ubuntuone-client-data 13.05-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.1 Architecture: amd64 CurrentDesktop: Unity Date: Wed May 14 21:29:17 2014 Dependencies: InstallationDate: Installed on 2014-05-15 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) PackageArchitecture: all SourcePackage: ubuntuone-client-data UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntuone-client-data/+bug/1319626/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp