Here are some of my findings regarding 8.7 p1.
Last couple of days deployed 8.7 p1 in our organisation, +- 750 workstations and 60 servers. Workstation installation went fine (only some outlook startup issues = remove extend.dat)
On our fileserver cluster (win 2003 server EE, SP2) we got a bigger problem after installation:
the share that hosted the homedirectories for about 2000 users was not available anymore.
Opening the share from windows explorer resulted in an Insufficient resources error. Eventlog from the server showed:
The server's configuration parameter "irpstacksize" is too small for the server to use a local device. Please increase the value of this parameter.
After applying the registry settings in
http://support.microsoft.com/kb/177078 and rebooting the machine, all was fine again.