Notepad++ v5.1 fixed bugs and added features (from v5.0.3) :

1.  Make Notepad++ Unicode-compliant application(Unicode path supported).
2.  Fix crash issue due to the incoherent modification/creation date.
3.  Enhance Find in files feature : launch in thread, stop as wish.
4.  Fix tag match highlighting mismatched bug.
5.  Make tag match highlighting on non html zone optional.
6.  Fix cpu high consumption bug while document is cloned with smart highlighting and xml matched highlighting features activating.
7.  Refine the Save/Open file directory settings (follow tab/last operation/user defined dir).
8.  Add "Doc go to new instance" and "Doc open in new instance" features.
9.  Move document to another instance of Notepad++ via drag and drop document tab.
10. Add new pluin notification NPPN_DOCACTIVATED and NPPN_LANGCHANGED. 
11. Fix context menu incorrect setting crash bug.
12. Fix crash problem while typing Chinese character in ANSI CSS document under Chinese environment.
13. Fix a problem with Incremental search+UTF8 in win9x.
14. Fix the User defined language not working in Unicode version bug.
15. Fix bug with CPP lexer keyword list.
16. Fix auto-completion not woring for HTML, SQL and RC problem.
17. Remove all the comic sans font (finally :) ).


Included plugins (Unicode):

1.  TexFX v0.24a
2.  MIME Tools v1.5
3.  NppExport v0.2.8
4.  Doc Monitor v2.2
5.  NppAutoIndent 1.2
6.  FTP_synchronize v0.9.6
7.  NppAutoIndent 1.2

Included plugins (ANSI):

1.  TexFX v0.24a
2.  NppExec v0.2 RC3.2
3.  Spell Checker v1.3.1
4.  MIME Tools v1.5
5.  FTP_synchronize v0.9.6
6.  NppExport v0.2.8
7.  Compare plugin v1.5.1
8.  Light Explorer v1.5
9.  Doc Monitor v2.2
10. NppAutoIndent 1.2