diff --git a/Database/HDBC/PostgreSQL.hs b/Database/HDBC/PostgreSQL.hs
--- a/Database/HDBC/PostgreSQL.hs
+++ b/Database/HDBC/PostgreSQL.hs
@@ -48,7 +48,7 @@
 
 * SqlDiffTime: INTERVAL
 
-* SqlPOSIXTime: INTEGER
+* SqlPOSIXTime: NUMERIC
 
 * SqlEpochTime: INTEGER
 
diff --git a/Database/HDBC/PostgreSQL/Statement.hsc b/Database/HDBC/PostgreSQL/Statement.hsc
--- a/Database/HDBC/PostgreSQL/Statement.hsc
+++ b/Database/HDBC/PostgreSQL/Statement.hsc
@@ -305,11 +305,7 @@
       
       -- Dates and Date/Times
       tid | tid == SqlDateT -> return $ SqlLocalDate (fromSql (toSql strval))
-      tid | tid == SqlTimestampWithZoneT -> return $
-              SqlZonedTime $ case parseTime defaultTimeLocale (iso8601DateFormat (Just "%T%z")) (strval ++ "00") of
-                               Nothing -> error $ "PostgreSQL Statement.hsc: couldn't parse " ++
-                                          strval ++ " as ZonedTime"
-                               Just x -> x
+      tid | tid == SqlTimestampWithZoneT -> return $ SqlZonedTime (fromSql (toSql (fixString strval)))
 
           -- SqlUTCDateTimeT not actually generated by PostgreSQL
                                             
@@ -321,18 +317,18 @@
             tid == SqlUTCTimeT   -> return $ SqlLocalTimeOfDay (fromSql (toSql strval))
 
       tid | tid == SqlTimeWithZoneT -> 
-              (let (a, b) = case (parseTime defaultTimeLocale "%T%z" timestr,
-                                  parseTime defaultTimeLocale "%T%z" timestr) of
+              (let (a, b) = case (parseTime defaultTimeLocale "%T%Q %z" timestr,
+                                  parseTime defaultTimeLocale "%T%Q %z" timestr) of
                                 (Just x, Just y) -> (x, y)
                                 x -> error $ "PostgreSQL Statement.hsc: Couldn't parse " ++ strval ++ " as SqlZonedLocalTimeOfDay: " ++ show x
-                   timestr = strval ++ "00"
+                   timestr = fixString strval
                in return $ SqlZonedLocalTimeOfDay a b)
 
-      SqlIntervalT _ -> return $ SqlDiffTime $ fromInteger $ 
+      SqlIntervalT _ -> return $ SqlDiffTime $ fromRational $ 
                          case split ':' strval of 
-                           [h, m, s] -> (read h) * 60 * 60 +
-                                        (read m) * 60 +
-                                        (read s)
+                           [h, m, s] -> toRational (((read h)::Integer) * 60 * 60 +
+                                                    ((read m)::Integer) * 60) +
+                                        toRational ((read s)::Double)
                            _ -> error $ "PostgreSQL Statement.hsc: Couldn't parse interval: " ++ strval
       
       -- TODO: For now we just map the binary types to SqlByteStrings. New SqlValue constructors are needed to handle these.
@@ -344,6 +340,16 @@
 
       SqlUnknownT _ -> return $ SqlByteString bstrval
 
+-- Convert "15:33:01.536+00" to "15:33:01.536 +0000"
+fixString :: String -> String
+fixString s =
+    let (strbase, zone) = splitAt (length s - 3) s
+    in
+      if (head zone) == '-' || (head zone) == '+'
+         then strbase ++ " " ++ zone ++ "00"
+         else -- It wasn't in the expected format; don't touch.
+              s
+  
 
 -- Make a rational number from a decimal string representation of the number.
 makeRationalFromDecimal :: String -> Rational
diff --git a/Database/HDBC/PostgreSQL/Utils.hsc b/Database/HDBC/PostgreSQL/Utils.hsc
--- a/Database/HDBC/PostgreSQL/Utils.hsc
+++ b/Database/HDBC/PostgreSQL/Utils.hsc
@@ -80,7 +80,6 @@
                                                 fromSql y ++ "'")
 -}
           convfunc y@(SqlUTCTime _) = convfunc (SqlZonedTime (fromSql y))
-          convfunc y@(SqlPOSIXTime _) = convfunc (SqlInteger (fromSql y))
           convfunc y@(SqlEpochTime _) = convfunc (SqlZonedTime (fromSql y))
           convfunc x = cstrUtf8BString (fromSql x)
           freefunc x =
diff --git a/HDBC-postgresql.cabal b/HDBC-postgresql.cabal
--- a/HDBC-postgresql.cabal
+++ b/HDBC-postgresql.cabal
@@ -1,5 +1,5 @@
 Name: HDBC-postgresql
-Version: 2.0.0.0
+Version: 2.1.0.0
 License: LGPL
 Maintainer: John Goerzen <jgoerzen@complete.org>
 Author: John Goerzen
@@ -31,12 +31,14 @@
     Database.HDBC.PostgreSQL.Parser,
     Database.HDBC.PostgreSQL.PTypeConv
   Extensions: ExistentialQuantification, ForeignFunctionInterface
-  Build-Depends: base, mtl, HDBC>=2.0.0, parsec, utf8-string,
+  Build-Depends: base, mtl, HDBC>=2.1.0, parsec, utf8-string,
                  bytestring, old-time, old-locale
   if flag(splitBase)
-    Build-Depends: base >= 3 && < 4, old-time
+    Build-Depends: base >= 3, old-time
   else
     Build-Depends: base < 3
+  if impl(ghc >= 6.9)
+    Build-Depends: base >= 4
   Extra-Libraries: pq
   C-Sources: hdbc-postgresql-helper.c
   Include-Dirs: .