memory growing when using SSL connections

[David]

Hi,

I'm using tn3270 sessions running over SSL. I may have up to 124 sessions 
activated concurrently, although I plan to get up to 250 sessions at some 
point. 

Whenever the sessions are stopped and restarted, I notice intermittently that 
memory grows in multiples of 4K bytes. 

I'm running on AIX 5.1, 5.2 and 5.3 and using openssl-0.9.8l.  
There doesn't appear to be an obvious memory leak in either my application or 
the OpenSSL stuff (all memory allocated when the sessions are started are freed 
when the sessions are stopped).
Here's a summary of the code structure:

SSL_library_init();
meth = TLSv1_client_method();
RAND_seed();
ctx = SSL_CTX_new(meth);

while ([some telnet connection wants to do SSL])
{
    ssl = SSL_new(ctx);
    SSL_set_fd()
    SSL_set_cipher_list();   
    SSL_set_connect_state();
    SSL_connect();
    do SSL_read(), SSL_write()
    SSL_shutdown();
    close FD;
    SSL_free();
    CRYPTO_cleanup_all_ex_data();
  }
         
Any ideas would be appreciated. 
Thanks,
David