When you add APPs to your Ipad with a computer that is NOT Authorised with your Ipad , the APPs that were on your Ipad wouldn't work any more and you have to delete them all and re-install them.
My Cydia has the same problem , when I click on it nothing happens, its like it was jail broken BAD.
SO I don't really think its because of the connection.
I think I have to restore may Ipad to IOS 5.1 and then jailbreak it AGAIN , the problem I have is that I have to save my SHSH BLOB files with the software "Tiny Umbrella"(which doesn't run correctly on my PC)
Any of you know how I can SAVE my SHSH files by using Ifun Box or any other software?
I think your best bet at this point IS to to restore to iOS 5.1.1 and start over. If you are still not getting Cydia to start its initializing, then something must have gone wrong with the jail break.
Remember that jail breaking and saving your SHSH blobs are two different processes. You don't have to jail break to save blobs and you don't have to save blobs to jail break. The main thing you have to do is ensure you save blobs before Apple closes the signing window. And, for iOS 5.1.1, they haven't yet.
Oh, and Tiny Umbrella is the other way to save blobs if you are not jailbroken.
So, try the jail break again (after restoring). Then, have a look at this thread for saving those SHSH blobs with Tiny Umbrella:
http://www.ipadforums.net/showthread.php?t=42301.
It should help with saving blobs. If you have trouble, still, with saving them, please ask for assistance over in that thread. It will keep the two topics somewhat separated and prevent fragmentation. Thanks.
Good luck with the jail break. Let us know if you get it sorted or holler back for more help.
Marilyn