IOError 11 CGI module

[Anton Jansen]

Hi list,
I have troubles with some python scripts I use as cgi scripts with 
thttpd. At irregular intervals when a post is made an IOError is raised 
by the CGI module. My question is how and why does this happen?

The exception looks like this:
---
Traceback (most recent call last):
  File "teamadmin.cgi", line 11, in ?
    iudex_cgi.makeform()
  File "/wing6/home/jury/iudex/nederlands/lib/iudex_cgi.py", line 24, 
in makeform
    form = _extractflat( cgi.FieldStorage() )
  File "/usr/lib/python2.3/cgi.py", line 517, in __init__
    self.read_urlencoded()
  File "/usr/lib/python2.3/cgi.py", line 622, in read_urlencoded
    qs = self.fp.read(self.length)
IOError: [Errno 11] Resource temporarily unavailable
---

The code:
File:iudex_cgi.py
---
import sys
import time
import traceback
import cgi
import MySQLdb
from iudex_tags import *
form = None
def _extractflat( fields ):
  form = {}
  for i in fields.value:
    if not form.has_key( i.name ):
      form[i.name] = []
    if i.filename:
      form[i.name].append( ( i.filename, i.value ) )
    else:
      form[i.name].append( i.value )
  return form
def makeform():
  global form
  form = _extractflat( cgi.FieldStorage() )
---
With kind regards,
Anton Jansen
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