Database errors with MS SQL Server: Connection reset by peer: socket write error

A MSSQL user reports that they get the following errors. A reboot fixes the problem temporarily, but it always returns:

Caused by: com.opensymphony.module.propertyset.PropertyImplementationException: SQL Exception while executing the following:SELECT ID, ENTITY_NAME, ENTITY_ID, PROPERTY_KEY, propertytype FROM propertyentry WHERE ENTITY_NAME=? AND ENTITY_ID=? ([Microsoft][SQLServer 2000 Driver for JDBC]Connection reset by peer: socket write error)^M
at com.opensymphony.module.propertyset.ofbiz.OFBizPropertySet.getKeys(OFBizPropertySet.java:100)^M
at com.opensymphony.module.propertyset.AbstractPropertySet.getKeys(AbstractPropertySet.java:292)^M
at com.atlassian.jira.propertyset.JiraCachingPropertySet.getKeys(JiraCachingPropertySet.java:225)^M
at com.opensymphony.module.propertyset.PropertySetCloner.cloneProperties(PropertySetCloner.java:114)^M
at com.opensymphony.module.propertyset.PropertySetManager.clone(PropertySetManager.java:61)^M
at com.atlassian.jira.propertyset.JiraCachingPropertySet.init(JiraCachingPropertySet.java:411)^M
at com.opensymphony.module.propertyset.PropertySetManager.getInstance(PropertySetManager.java:45)^M
at com.opensymphony.module.propertyset.PropertySetManager.getInstance(PropertySetManager.java:22)^M
at com.atlassian.core.user.preferences.UserPreferences.<init>(UserPreferences.java:56)^M
at com.atlassian.core.user.preferences.UserPreferences.<init>(UserPreferences.java:38)^M
at com.atlassian.jira.web.action.JiraWebActionSupport.getUserPreferences(JiraWebActionSupport.java:87)^M
at com.atlassian.jira.web.action.JiraWebActionSupport.getLocale(JiraWebActionSupport.java:482)^M
at webwork.action.ActionSupport.getTexts(ActionSupport.java:289)^M
at webwork.action.ActionSupport.getText(ActionSupport.java:323)^M
at com.atlassian.jira.action.JiraActionSupport.getUnescapedText(JiraActionSupport.java:159)^M
... 74 more^M
Jan 7, 2005 10:34:22 AM webwork.util.ValueStack findValue^M