diff --git a/lisp/org-exp.el b/lisp/org-exp.el
index 964e18e1f..f95018334 100644
--- a/lisp/org-exp.el
+++ b/lisp/org-exp.el
@@ -1197,23 +1197,11 @@ on this string to produce the exported version."
       ;; Another hook
       (run-hooks 'org-export-preprocess-before-backend-specifics-hook)
 
-      ;; LaTeX-specific preprocessing
-      (when (eq backend 'latex)
-	(require 'org-latex nil)
-	(org-export-latex-preprocess parameters))
-
-      ;; ASCII-specific preprocessing
-      (when (eq backend 'ascii)
-	(org-export-ascii-preprocess parameters))
-
-      ;; HTML-specific preprocessing
-      (when (eq backend 'html)
-	(org-export-html-preprocess parameters))
-
-      ;; DocBook-specific preprocessing
-      (when (eq backend 'docbook)
-	(require 'org-docbook nil)
-	(org-export-docbook-preprocess parameters))
+      ;; Backend-specific preprocessing
+      (let* ((backend-name (symbol-name backend))
+	     (f (intern (format "org-export-%s-preprocess" backend-name))))
+	(require (intern (concat "org-" backend-name)) nil)
+	(funcall f parameters))
 
       ;; Remove or replace comments
       (org-export-handle-comments (plist-get parameters :comments))
diff --git a/lisp/org-latex.el b/lisp/org-latex.el
index d9e0e3fdf..19baa4074 100644
--- a/lisp/org-latex.el
+++ b/lisp/org-latex.el
@@ -1334,8 +1334,10 @@ OPT-PLIST is the options plist for current buffer."
   (let ((toc (plist-get opt-plist :table-of-contents))
 	(author (org-export-apply-macros-in-string
 		 (plist-get opt-plist :author)))
-	(email (org-export-apply-macros-in-string
-		(plist-get opt-plist :email))))
+	(email (replace-regexp-in-string 
+		"_" "\\\\_" 
+		(org-export-apply-macros-in-string
+		 (plist-get opt-plist :email)))))
     (concat
      (if (plist-get opt-plist :time-stamp-file)
 	 (format-time-string "%% Created %Y-%m-%d %a %H:%M\n"))
@@ -1361,11 +1363,10 @@ OPT-PLIST is the options plist for current buffer."
      (if (plist-get opt-plist :author-info)
 	 (format "\\author{%s%s}\n"
 		 (org-export-latex-fontify-headline (or author user-full-name))
-		 (org-export-latex-fontify-headline 
-		  (if (and (plist-get opt-plist :email-info) email
+		 (if (and (plist-get opt-plist :email-info) email
 			   (string-match "\\S-" email))
 		      (format "\\thanks{%s}" email)
-		    "")))
+		   ""))
        (format "%%\\author{%s}\n"
 	       (org-export-latex-fontify-headline (or author user-full-name))))
      ;; insert the date