In addition to many of the tweaks and themes not being updated - Apple also changed the names and locations of many of the iOS 4.x file names and images.
For example, go back to my sticky on removing the slideshow icon (here:
http://www.ipadforums.net/jailbreak...94-how-hide-lock-screen-slideshow-icon-2.html) and see my update, either in the first post or at post #15. If you make the changes I wrote about, that stoooopid slideshow icon will go away again.
It doesn't appear as if SmartScreen is compatible, yet, with iOS 5 (I don't use it any longer - so I had to go look). In fact, I couldn't find it in Cydia (nor could I find anything about "MediaPhone"). Smartscreen also doesn't show up in the Google Docs list (maintained by users) that tracks iOS 5 compatibility ("iOS 5 - Cydia Tweaks Compatibillity List"). I'm afraid it's gone ... for the nonce.
For the Lockscreen clock, I use
MoveToUnlock ($0,99, USD), which gives you the option to hide/undhide the clock and/or the unlock slider. Maybe that'll work for you?
Sorry to not give you better news. Guess that's what we get when we upgrade - sometimes developers fall behind (and, of course, it didn't help when Apple changed the names and file locations!).
But, maybe some of this will help?
Marilyn