I have OES2/Linux with Win2k/XP clients. Novell client 4.91SP3 (and SP4 on very few machines) iprint client 4.32 mostly. On sunday I did upgrade from ZFD2 to ZDM7 for which I needed new sets of windows group policies (I doubt that it has anything to do with the problem, but I'm mentioning it in case it does). The problem is, that when I log on to a workstation it takes a long time to open the printer for the first time. Regardless of whether it is control panel->printers->printer or just choosing another printer in file->print dialog, first doing so makes the process freeze for a significant time. After some time the application unfreezes and the work can continue normally, and further browsing printers, changing settings, printing doesn't cause such lag. Until I log out and log in again.

I tried to trace the iprint client and indeed in ipptrace.txt I get a gap.
Code:
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - ======== HTTPSendSimplePost ========
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - IppGenUTF8String (/ipp/publicystyka207-hp1320)
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - GetCurrentUserName (Administrator)
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - User-Agent: Novell iPrint Client - v04.32.00
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - Cache-Control: no-cache
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - Pragma: no-cache
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - Host: tremolo.rdc-local:631
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - Content-type: application/ipp
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - Connection: keep-alive
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - GetCurrentUserName (Administrator)
[Administrator][thrd=00000350][    429036ms][NIPPLIB] - HTTPReadResponseHeader
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - Authorization: Basic Qa49a3JfayxPVT1JbmZvcm1hdHlrYSfPPoJEQzpwYW5lbCB6
YXN4bGFqYWN5
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - Content-length: 622
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - GetUserRegPath - LocalMachineAccount (S-1-5-21-1606980848-1202660629-
1343024091-500) Validated
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - S-1-5-21-1606980848-1202660629-1343024091-500\Software\Novell-iPrint
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - POST /ipp/publicystyka207-hp1320 HTTP/1.1
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - Accept: application/ipp
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - Accept-Charset:  UTF-8,ISO-8859-1
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - HTTPDoSend - Calling SSL_write - httpRef=000AF9D8,security=000B0018,s
slCred=000B0848,ctx=01D4E448,ssl=01D4ED98,socket=1020
[Administrator][thrd=000000D4][    429036ms][NIPPLIB] - HTTPReadResponseHeader
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - Accept-Language: pl, en-us
[Administrator][thrd=00000580][    429036ms][NIPPLIB] - User-Agent: Novell iPrint Client - v04.32.00
[Administrator][thrd=00000580][    429046ms][NIPPLIB] - Cache-Control: no-cache
[Administrator][thrd=00000580][    429046ms][NIPPLIB] - Pragma: no-cache
[Administrator][thrd=00000580][    429046ms][NIPPLIB] - Host: tremolo.rdc-local:631
[Administrator][thrd=00000580][    429046ms][NIPPLIB] - Content-type: application/ipp
[Administrator][thrd=00000580][    429046ms][NIPPLIB] - Connection: keep-alive
[Administrator][thrd=00000580][    429046ms][NIPPLIB] - Authorization: Basic Q049a3J1ayxPVT1JbmZvcm1hdHlrYSxPPVJEQzpwYW5lbCB6
YXNpbGFqYWN5
[Administrator][thrd=00000580][    429046ms][NIPPLIB] - Content-length: 564
[Administrator][thrd=00000580][    429046ms][NIPPLIB] - HTTPDoSend - Calling SSL_write - httpRef=000CA008,security=000CA648,s
slCred=000CAE78,ctx=01D5D770,ssl=01D5DB70,socket=1056
[Administrator][thrd=00000580][    429046ms][NIPPLIB] - HTTPReadResponseHeader
[Administrator][thrd=00000464][    727115ms][NIPPLIB] - HTTP/1.1 200 OK
But I have completely no idea what can cause that delay.