Tsearch2 default locale on postgres 8.2

Hi!

I am having a tsearch2 problem on postgres 8.2 again ...
when I try to set the default config for tsearch2 with

"select set_curcfg('default'); it works fine in the same pgadmin
session when i use "select show_curcfg();" afterwards. The correct
OID is shown.

If i then close the query window and open a new one and then try
the "select show_curcfg();" again, it states
"ERROR: could not find tsearch config by locale"

Any idea why the configuration is not saved correctly?

Best regards
Manuel ...