strange things & ajax errors after upgrade.

this is the ajax error from trying to change the format of the image that comes with the article content type..

An AJAX HTTP error occurred.
HTTP Result Code: 500
Debugging information follows.
Path: /system/ajax
StatusText: Internal Server Error
ResponseText: jQuery.extend(Drupal.settings, {"devel":{"request_id":573369}});
Executed 34 queries in 33.06 ms. Queries exceeding 5 ms are highlighted. Page execution time was 367.88 ms. Memory used at: devel_boot()=1.6 MB, devel_shutdown()=9.74 MB, PHP peak=11.75 MB.ms#whereopsquerytarget2.185DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache_bootstrap WHERE cid IN (:cids_0)
default0.21_registry_check_codeP A ESELECT filename FROM registry WHERE name = :name AND type = :type
default0.535DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache_bootstrap WHERE cid IN (:cids_0)
default3.721system_listP A ESELECT * FROM system WHERE type = 'theme' OR (type = 'module' AND status = 1) ORDER BY weight ASC, name ASC
default1.412DrupalDatabaseCache::setP ASELECT 1 AS expression
FROM
cache_bootstrap cache_bootstrap
WHERE ( (cid = :db_condition_placeholder_0) ) FOR UPDATE
default2.632DrupalDatabaseCache::setP AINSERT INTO cache_bootstrap (cid, serialized, created, expire, data) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4)
default0.445DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache_bootstrap WHERE cid IN (:cids_0)
default0.235DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache_bootstrap WHERE cid IN (:cids_0)
default0.282DrupalDatabaseCache::setP ASELECT 1 AS expression
FROM
cache_bootstrap cache_bootstrap
WHERE ( (cid = :db_condition_placeholder_0) ) FOR UPDATE
default0.32DrupalDatabaseCache::setP AINSERT INTO cache_bootstrap (cid, serialized, created, expire, data) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4)
default0.661menu_get_itemP A ESELECT * FROM menu_router WHERE path IN (:ancestors_0, :ancestors_1, :ancestors_2) ORDER BY fit DESC LIMIT 0, 1
default0.411DrupalDatabaseCache::clearP ADELETE FROM cache
WHERE (cid LIKE :db_condition_placeholder_0 ESCAPE '\\')
default0.421flood_is_allowedP A ESELECT COUNT(*) FROM flood WHERE event = :event AND identifier = :identifier AND timestamp > :timestamp
default0.382DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache_form WHERE cid IN (:cids_0)
default0.522DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache_form WHERE cid IN (:cids_0)
default2.714DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache WHERE cid IN (:cids_0)
default1.334DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache WHERE cid IN (:cids_0)
default0.241_node_types_buildP A ESELECT nt.*
FROM
node_type nt
WHERE (disabled = :db_condition_placeholder_0)
ORDER BY nt.type ASC
default1.033DrupalDatabaseCache::setP ASELECT 1 AS expression
FROM
cache cache
WHERE ( (cid = :db_condition_placeholder_0) ) FOR UPDATE
default0.513DrupalDatabaseCache::setP AINSERT INTO cache (cid, serialized, created, expire, data) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4)
default0.141taxonomy_vocabulary_get_namesP A ESELECT name, machine_name, vid FROM taxonomy_vocabulary
default0.444DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache WHERE cid IN (:cids_0)
default0.274DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache WHERE cid IN (:cids_0)
default0.425DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache_bootstrap WHERE cid IN (:cids_0)
default0.231field_sql_storage_schemaP A ESELECT 1 FROM field_config LIMIT 0, 1
default0.171field_read_fieldsP A ESELECT fc.*
FROM
field_config fc
default0.483DrupalDatabaseCache::setP ASELECT 1 AS expression
FROM
cache cache
WHERE ( (cid = :db_condition_placeholder_0) ) FOR UPDATE
default7.663DrupalDatabaseCache::setP AINSERT INTO cache (cid, serialized, created, expire, data) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4)
default0.493DrupalDatabaseCache::setP ASELECT 1 AS expression
FROM
cache cache
WHERE ( (cid = :db_condition_placeholder_0) ) FOR UPDATE
default0.813DrupalDatabaseCache::setP AINSERT INTO cache (cid, serialized, created, expire, data) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4)
default0.272DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache_field WHERE cid IN (:cids_0)
default0.31field_read_instancesP A ESELECT fci.*
FROM
field_config_instance fci
INNER JOIN field_config fc ON fc.id = fci.field_id
WHERE (fci.bundle = :db_condition_placeholder_0) AND (fci.entity_type = :db_condition_placeholder_1) AND (fc.deleted = :db_condition_placeholder_2) AND (fci.deleted = :db_condition_placeholder_3)
default0.292DrupalDatabaseCache::getMultipleP A ESELECT cid, data, created, expire, serialized FROM cache_field WHERE cid IN (:cids_0)
default0.961lock_release_allP ADELETE FROM semaphore
WHERE (value = :db_condition_placeholder_0)
default

Sorry Grace, I do apologise, I had a look but couldn't find anything...

Thanks for your help.