Question : Network Drives don't reconnect consistantly...

I have a 2003 domain controller on a pretty seamless/great working network except for one small issue... there are about 25 users, most are using WinXP, a few are using Win7 and Vista and this seems to happen to everyone now and then very randomly.  I typically just have folks go to the SYSVOL/Scripts folder on the DC and run the login.bat file automatically if drives don't connect on their own and this fixes the issue but they are asking why this is happening more and more lately.
Im not sure why...
Basically every user is assigned a U: drive which maps to their home directory on the server, then there are about 10 other drive letters that map via the login.bat script.  A user may log on and nothing will connect, then reboot and all drives connect etc... its just frustrating mainly and i really dont know how to troubleshoot this or if anyone else has this issue or has solved it?

Thanks

Answer : Network Drives don't reconnect consistantly...

Please check your DNS  & DHCP is working properly. When mapping a network drive, you can tell the computer to remember your mapping after you restart the computer. If you want to make all future connections are persistent (auto-reconnect at login), use the following in .bat file:

NET USE X:\\servername\sharefolder name  /Persistent:Yes
or
NET USE X:\\servername\sharefolder name /P:Yes

 X=: you may put any drive letter