When logging into front end, I see a blank page or local host page

[nkworkshop]

We recently shifted our magento sites from one server to another server. And from then when our customers try to login from front end, either get a blank page or local host page. But if they hit back button and try logging in again then it works. Why is this happening?

[Stuart M]

Normally this session, cache or memory related.

Few steps for you to try without obviously seeing your servers error logs:

1. Empty your var/sessions folder.

2. Empty your var/cache folder.

3. Make sure you have enough memory allocated to php in your php.ini

If none of those work try and get hold of your servers error_log file and share it so we can review for you and give you a better diagnosis.

[BryanWalters]

Yes S Macfarlane,

The mentioned suggestion works. I have already tried same in past.