Postgresql errors

Hi I believe it is only cause your module but we get a lot errors on DB like:

2013-04-19 11:05:07 BRT STATEMENT:  SELECT c.*
	FROM 
	custom_breadcrumbsapi c
	WHERE  (module_page = 'maintenance_page') AND (language IN  ('pt-br', '')) 
	ORDER BY language ASC
2013-04-19 11:05:07 BRT ERROR:  current transaction is aborted, commands ignored until end of transaction block
2013-04-19 11:05:07 BRT STATEMENT:  DELETE FROM semaphore 
	WHERE  (value = '149854244951714f1295b6a3.05587705') 
2013-04-19 11:05:07 BRT ERROR:  current transaction is aborted, commands ignored until end of transaction block
2013-04-19 11:05:07 BRT STATEMENT:  INSERT INTO semaphore (name, value, expire) VALUES ('theme_registry:runtime:my_template:cache', '149854244951714f1295b6a3.05587705', '1366380337.2838')
2013-04-19 11:05:07 BRT ERROR:  current transaction is aborted, commands ignored until end of transaction block
2013-04-19 11:05:07 BRT STATEMENT:  SELECT expire, value FROM semaphore WHERE name = 'theme_registry:runtime:my_template:cache'
2013-04-19 11:05:08 BRT ERROR:  invalid byte sequence for encoding "UTF8": 0xe36f20
2013-04-19 11:05:08 BRT ERROR:  current transaction is aborted, commands ignored until end of transaction block
2013-04-19 11:05:08 BRT STATEMENT:  SELECT c.*
	FROM 
	custom_breadcrumbsapi c
	WHERE  (module_page = 'maintenance_page') AND (language IN  ('pt-br', '')) 
	ORDER BY language ASC
2013-04-19 11:05:08 BRT ERROR:  current transaction is aborted, commands ignored until end of transaction block
2013-04-19 11:05:08 BRT STATEMENT:  DELETE FROM semaphore 
	WHERE  (value = '205375293551714f13d3fa35.69433216') 
2013-04-19 11:05:08 BRT ERROR:  current transaction is aborted, commands ignored until end of transaction block
2013-04-19 11:05:08 BRT STATEMENT:  INSERT INTO semaphore (name, value, expire) VALUES ('theme_registry:runtime:my_template:cache', '205375293551714f13d3fa35.69433216', '1366380338.0979')
2013-04-19 11:05:08 BRT ERROR:  current transaction is aborted, commands ignored until end of transaction block
2013-04-19 11:05:08 BRT STATEMENT:  SELECT expire, value FROM semaphore WHERE name = 'theme_registry:runtime:my_template:cache'

We use Portuguese language - seams like encoding to DB is not correct - we use Psql 9.1

The site working fine but our logs are full of this errors