If you're developing webparts using VSeWSS and going to run the setup.bat that that VSeWSS creates, you might need to modify the deploy solution line before running it.
The deploysolution instruction that VSeWSS adds contains the -local argument. This is all good if you're going to run it on an implementation with only 1 WFE, but for farms with 2 or more WFE's then you will need to change -local to -immediate.
I also make it a habit to call the execadmsvcjobs command before and after adding and deploying.
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