Noticed that after performing housing keeping activity on SQL 2005 (32 bit) which involves clearing history, shrinking database, re-indexing and update Stats, any process goes into suspended state. I mean any action you perform for application GUI , it stuck and after looking inot the database we find that process is in suspended state.
However after restoring the database (database backup taken before performing housekeeping activity) on same server and performing update stats from command line, if i try to perform the same activity, then there is no issue.
Any reason why this behavior is encountered after performing housekeeping activity only.