Start Up

If you wanna try msconfig again. Do this once you get to startup there is a button where you can put a check mark that states hide all microsoft products or something in that nature put the check mark there. The list will get smaller. Then uncheck everything you have there hit the apply and close restart the machine and see if starts quicker if it does go back to msconfig do the same thing this put a check on one of the item that you removed the check from. hit apply close and restart keep repeating until you start lagging or find the culprit to your problem.

Disable startup items in msconfig.
Selective Startup
Uncheck "Load Statup Items"

If system boots up quickly, one of the startup items is causing slowdown. Sequence them back in until you find culprit. Anti-virus and firewall software are legitimate programs that can cause sluggish startup. Would start with them.

do you have to much external devices attached to your system? eg. printer

Check network settings
conection/tcp/ip advanced /wins
check "enable netbios over tcp/ip"
also confirm gateway and dns servers are correct.

Open My computer=>Tools=>Folder options=>View tab=>UNCHECK Automatically Look for a network resources (or something like that)

If you have network drives mapped go and remap them and unclick the RECONNECT at Login option

There was a similar option within your TCPIP setting on the current network connection Uncheck it