Catastrophic Failure opening ODBC via Citrix

Question

We recently had our Citrix server crash unexpectedly. When it came back up, there was a new issue -- every ODBC connection fails with "Catastrophic Failure" (0x8000FFFF). The issue is limited to Citrix / ICA connections; logging in as the same user via RDP works as usual.

The following code is my minimal test case (for wscript):

''// test_odbc.vbs
strConn = "Driver={Microsoft Text Driver (*.txt; *.csv)};Dbq=c:\files\;"
Set rs = CreateObject("ADODB.recordset")
strSQL = "SELECT * FROM myFile.csv"

wscript.echo "Press OK to Test"

''// This line breaks over Citrix, but not over Terminal Services
''// ----------------------
rs.open strSQL, strConn, 3,3
''// ----------------------
wscript.echo rs("a")

Any insight would be greatly appreciated.

Windows Server 2003 SP1, Citrix MetaFrame Presentation Server 4.0.

Clients include at least versions 10.2-11 running on 2000-Vista, OS X. ODBC error happens whether a DSN is used or not, on at least Access, MS-SQL, and CSV. Connections both through the SSL Gateway and directly. There have been a few users actually able to log in without trouble, but I can't pin down anything special about them.

---

Here is the ODBC trace of where things go bad. A good run and a bad run look identical, except that the bad run stops between the enter and exit of SQLDriverConnectW (and some of the repeating hex identifiers are different each time).

AppName        2adc-1f6c    ENTER SQLAllocEnv 
        HENV *              4BFEF838

AppName        2adc-1f6c    EXIT  SQLAllocEnv  with return code 0 (SQL_SUCCESS)
        HENV *              0x4BFEF838 ( 0x02911c18)

AppName        2adc-1f6c    ENTER SQLGetEnvAttr 
        SQLHENV             02911C18
        SQLINTEGER                 201 <unknown>
        SQLPOINTER          [Unknown attribute 201]
        SQLINTEGER                   4 
        SQLINTEGER *        0x0012DA2C

AppName        2adc-1f6c    EXIT  SQLGetEnvAttr  with return code 0 (SQL_SUCCESS)
        SQLHENV             02911C18
        SQLINTEGER                 201 <unknown>
        SQLPOINTER          [Unknown attribute 201]
        SQLINTEGER                   4 
        SQLINTEGER *        0x0012DA2C (1465596)

AppName        2adc-1f6c    ENTER SQLAllocEnv 
        HENV *              4BFEF83C

AppName        2adc-1f6c    EXIT  SQLAllocEnv  with return code 0 (SQL_SUCCESS)
        HENV *              0x4BFEF83C ( 0x02911cc0)

AppName        2adc-1f6c    ENTER SQLSetEnvAttr 
        SQLHENV             02911CC0
        SQLINTEGER                 201 <unknown>
        SQLPOINTER          [Unknown attribute 201]
        SQLINTEGER                  -6 

AppName        2adc-1f6c    EXIT  SQLSetEnvAttr  with return code 0 (SQL_SUCCESS)
        SQLHENV             02911CC0
        SQLINTEGER                 201 <unknown>
        SQLPOINTER          [Unknown attribute 201]
        SQLINTEGER                  -6 

AppName        2adc-1f6c    ENTER SQLAllocConnect 
        HENV                02911CC0
        HDBC *              0012E63C

AppName        2adc-1f6c    EXIT  SQLAllocConnect  with return code 0 (SQL_SUCCESS)
        HENV                02911CC0
        HDBC *              0x0012E63C ( 0x02911d68)

AppName        2adc-1f6c    ENTER SQLGetInfoW 
        HDBC                02911D68
        UWORD                       10 <SQL_ODBC_VER>
        PTR                 0x0012E608 
        SWORD                       22 
        SWORD *             0x00000000

AppName        2adc-1f6c    EXIT  SQLGetInfoW  with return code 0 (SQL_SUCCESS)
        HDBC                02911D68
        UWORD                       10 <SQL_ODBC_VER>
        PTR                 0x0012E608 
        SWORD                       22 
        SWORD *             0x00000000

AppName        2adc-1f6c    ENTER SQLSetConnectAttrW 
        SQLHDBC             02911D68
        SQLINTEGER                 103 <SQL_ATTR_LOGIN_TIMEOUT>
        SQLPOINTER          0x0000000F
        SQLINTEGER                  -6 

AppName        2adc-1f6c    EXIT  SQLSetConnectAttrW  with return code 0 (SQL_SUCCESS)
        SQLHDBC             02911D68
        SQLINTEGER                 103 <SQL_ATTR_LOGIN_TIMEOUT>
        SQLPOINTER          0x0000000F (BADMEM)
        SQLINTEGER                  -6 

AppName        2adc-1f6c    ENTER SQLDriverConnectW 
        HDBC                02911D68
        HWND                00000000
        WCHAR *             0x4BF78088 [      -3] "******\ 0"
        SWORD                       -3 
        WCHAR *             0x4BF78088 
        SWORD                        2 
        SWORD *             0x00000000
        UWORD                        0 <SQL_DRIVER_NOPROMPT>

------ This is where the trace of failed connections ends -------

AppName        2adc-1f6c    EXIT  SQLDriverConnectW  with return code 1 (SQL_SUCCESS_WITH_INFO)
        HDBC                02911D68
        HWND                00000000
        WCHAR *             0x4BF78088 [      -3] "******\ 0"
        SWORD                       -3 
        WCHAR *             0x4BF78088 
        SWORD                        2 
        SWORD *             0x00000000
        UWORD                        0 <SQL_DRIVER_NOPROMPT>

        DIAG [01000] [Microsoft][ODBC SQL Server Driver][SQL Server]Changed database context to 'db_name'. (5701) 

        DIAG [01000] [Microsoft][ODBC SQL Server Driver][SQL Server]Changed language setting to us_english. (5703) 

.... and the good run keeps going for a long ways ...