diff -urN apt-0.5.15lorg2.orig/apt-pkg/pkgcachegen.cc apt-0.5.15lorg2/apt-pkg/pkgcachegen.cc
--- apt-0.5.15lorg2.orig/apt-pkg/pkgcachegen.cc	2008-05-11 18:14:17 +0300
+++ apt-0.5.15lorg2/apt-pkg/pkgcachegen.cc	2008-08-25 19:36:38 +0300
@@ -228,7 +228,7 @@
 
    FoundFileDeps |= List.HasFileDeps();
 
-   if (Cache.HeaderP->PackageCount >= (1ULL<<sizeof(Cache.PkgP->ID)*8)-1)
+   if (Cache.HeaderP->PackageCount >= UINT_MAX)
       return _error->Error(_("Wow, you exceeded the number of package "
 			     "names this APT is capable of."));
    if (Cache.HeaderP->VersionCount >= (1ULL<<(sizeof(Cache.VerP->ID)*8))-1)
diff -urN apt-0.5.15lorg2.orig/apt-pkg/pkgcache.h apt-0.5.15lorg2/apt-pkg/pkgcache.h
--- apt-0.5.15lorg2.orig/apt-pkg/pkgcache.h	2008-05-11 18:14:17 +0300
+++ apt-0.5.15lorg2/apt-pkg/pkgcache.h	2008-08-25 19:25:35 +0300
@@ -227,7 +227,7 @@
    unsigned char InstState;         // Flags
    unsigned char CurrentState;      // State
    
-   unsigned short ID;
+   unsigned int ID;
    unsigned long Flags;
 };