I don't like Gallery 3d or justpictures or others, I prefer the stock album, but with 2.1 is very slow (i have 4000+ pictures) and so...:
1) Go in system/app and copy and paste in your sdcard your SemcCamera.apk and then raname in to SemcCameraOr.apk
2) Move SemcCamera.apk from /system/app to data/app. (with rootexplorer)
3) Reboot and do regular uninstall.
4) Install from your sdcard 1.6 SemcCamera (SemcCamera 1.6.apk)
5) Launch album and wait some time. (you can see a little lens!! Wait for this lens!! Don't procede if you don't see the lens in the notification area, wait...)
Now your album is faster than the others (new album, justpictures, gallery 3d...etc...), but you can't use your camera, so...
6) Now uninstall SemcCamera
7) Install your SemcCamera (point 1)
8) Play with the your new fast album!
... But it's not difficult and i hope that someone can improve it in some steps,
First SemecCamera.apk is 1.6
Second SemcCamera.apk is 2.1 (the original file for new fw 2.1!!)