diff --git a/doc/FAQ b/doc/FAQ
index ee62ef5f..5033581c 100644
--- a/doc/FAQ
+++ b/doc/FAQ
@@ -40,6 +40,7 @@ CONTENTS
   3.6A 'No rule to make target xxxx needed by xxxx' - how to fix?
 3.7 It still does not compile or patch
 3.8 'make install' fails on Mandrake kernels
+3.9 I get unresolved symbols when I modprobe modules (Red Hat especially)
 
 4. Problems
 4.1 Why do my fans report exactly half/double their values by your code
@@ -419,6 +420,34 @@ patches first!
 Edit our Makefile on the 'MODDIR :=' line to hard-code the module directory.
 
 
+3.9 I get unresolved symbols when I modprobe modules (Red Hat especially)
+
+    Example:
+         *** Unresolved symbols in /lib/modules/2.4.5/kernel/drivers/i2c/i2c-i810.o
+                 i2c_bit_add_bus_R8c3bc60e
+                 i2c_bit_del_bus_R92b18f49
+
+    You can also run 'depmod -a -e' to see all unresolved symbols.
+
+    These are module versioning problems. Generally you did not compile
+against the kernel you are running. Sometimes the Red Hat source you
+have is not for the kernel you are running. 
+You must compile our package against the source for the kernel you
+are running with something like 'make LINUX=/usr/src/linux-2.4.14'.
+
+    Try the following to be sure:
+
+    * nm --extern MODULE.o
+      Filter out the kernel symbols, like kmalloc, printk etc. and note the
+      number code behind them, like printk_R1b7d4074. If there is no numeric
+      code after them, note this too.
+    * grep SYMBOL /proc/ksyms
+      Substitute SYMBOL by the basename of the symbols above, like kmalloc,
+      printk etc. Note the number code behind them, or the lack thereof.
+    * Compare both sets of symbols. Are they the same? If so, the problem
+      lies somewhere else. Are they different? If so, you have a module
+      versioning problem.
+
 
 4 Problems
 ----------
@@ -1009,7 +1038,7 @@ can not be sure.
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-Rev 2.4 (MDS) Minor updates 20010929
+Rev 2.4 (MDS) Minor updates 20011030
 Rev 2.4 (MDS) Minor updates 20010722
 Rev 2.3 (MDS) General update, 20010224, released with lm_sensors 2.6.0.
 Rev 2.2 (Frodo) Corrections for lm_sensors 2.4, 19990920