[beta] select_group dead slow

Hello,

$ slrn --version
Slrn 0.9.8.1pl2 [2005-02-17]
	* Note: This version is a developer preview.
S-Lang Library Version: pre2.0.7-52
Compiled at: Aug 30 2006 23:39:59
Operating System: Darwin

 COMPILE TIME OPTIONS:
  Backends: +nntp -slrnpull -spool
  External programs / libs: -canlock -inews -ssl -uudeview
  Features: +charset_mapping +decoding +emphasized_text +end_of_thread
    +fake_refs +gen_msgid -grouplens -msgid_cache +piping +rnlock +slang
    +spoilers -strict_from
 DEFAULTS:
  Default server object:     nntp
  Default posting mechanism: nntp

$ leafnode -V
leafnode 2.0.0.alpha20060826a

Since installing leafnode2 select_group w/o prefix is dead slow.
About 50 headers in at least 2 secs.

The reasons I am posting here first instead of leafnode-list are:

1) select group w/ prefix arg 4 is as fast as before.

2) the following select_group_hack is almost as fast as
   select_group used to be:

static define enter_total ()
{
	variable cutoff = get_variable_value ("query_read_group_cutoff");
	set_integer_variable ("query_read_group_cutoff", 0);
	set_prefix_argument (4);
	call ("select_group");
	reset_prefix_arg ();
	set_integer_variable ("query_read_group_cutoff", cutoff);
}

static define select_group_hack ()
{
	enter_total ();
	call ("expunge");
}

3) tin doesn't have any probs ;(

Any pointers or ideas are very welcome.

c
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